PERIODICAL ABBREVIATIONS 
Acta Entomol. Bohemoslov. — Acta Entomologica Bohemoslo- 
vaca. 
Agr. Chem. — Agricultural Chemicals. 
Agr. Tec. Mex. — Agricultura Tecnica en Mexico. 
Agron. J. — Agronomy Journal. 
American Cyanamid Co. Leafl. — American Cyanamid Com- 
pany Leaflet. 
Ann. Entomol, Soc. Amer. — Annals of the Entomological So- 
ciety of America. 
Ann. Soc. Entomol. Fr. — Annales de la Société Entomologique 
de France. 
Annu. Rev. Entomol. — Annual Review of Entomology. 
Ariz. Agr. Exp. Sta. Bull. — Arizona Agricultural Experiment 
Station Bulletin. 
Ariz. Agr. Exp. Sta. Mimeo. Rep. — Arizona Agricultural Exper- 
iment Station Mimeographed Report. 
Ariz. Coop. Ext. Serv. Agr. Exp. Sta. Bull. — Arizona Coopera- 
tive Extension Service and Agricultural Experiment Station 
Bulletin. 
Ariz. Coop. Ext. Serv. Agr. Exp. Sta. Fold. — Arizona Coopera- 
tive Extension Service and Agricultural Experiment Station 
Folder. 
Arkansas Farm Res. — Arkansas Farm Research. 
Biul. Inst. Ochr. Rosl. — Biuletyn Instytutu Ochrony Roslin. 
Boll. Lab. Entomol. Agr. ‘Filippo Silvestri’ — Bollettino del 
Laboratorio di Entomologia Agraria ‘Filippo Silvestri’. 
Bull. Brooklyn Entomol. Soc. — Bulletin of the Brooklyn En- 
tomological Society. 
Bull. Entomol. Soc. Amer. — Bulletin of the Entomological So- 
ciety of America. 
Calif. Agr. — California Agriculture. 
Calif. Agr. Exp. Sta. Ext. Serv. Leaf. — California Agricultural 
Experiment Station Extension Service Leaflet. 
Calif. Agr. Ext. Serv. Iden. Sheet — California Agricultural Ex- 
tension Service Identification Sheet. 
Calif. Agr. Ext. Serv. Manuscript — California Agricultural Ex- 
tension Service Manuscript. 
Calif. Dep. Agr. Quart. Bull. — California Department of Agri- 
culture Quarterly Bulletin. 
Can. Entomol. — Canadian Entomologist. 
Commonw. Inst. Biol. Contr. Tech. Bull. — Technical Bulletin 
of the Commonwealth Institute of Biological Control. 
Crop Sci. — Crop Science. 
Crops Soils Mag. — Crops and Soils Magazine. 
Ekol. Pol. Ser. A. — Ekologia Polska-Seria A. 
Entomol. Rev. — Entomological Review. 
Environ. Entomol. — Environmental Entomology. 
Farm Manage. — Farm Management. 
Folia Entomol. Mex. — Folia Entomologica Mexicana. 
Indian Agr. — Indian Agriculturist. 
Indian J. Entomol. — Indian Journal of Entomology. 
Israel J. Entomol. — Israel Journal of Entomology. 
J. Econ. Entomol. — Journal of Economic Entomology. 
J. Environ. Qual. — Journal of Environmental Quality. 
J. Insect Physiol. — Journal of Insect Physiology. 
J. Kans. Entomol. Soc. — Journal of the Kansas Entomological 
Society. 
Kans. Agr. Exp. Sta. Mimeo. Ser. — Kansas Agricultural Exper- 
iment Station Mimeograph Series. 
Kans. Agr. Exp. Sta. Tech. Bull. — Kansas Agricultural Exper- 
iment Station Technical Bulletin. 
Mex. Secr. Agr. Ganad. Ofic. Estud. Espec. Foll. Tec. — Mexico 
Secretaria de Agricultura y Ganaderia, Oficina de Estudios 
Especiales, Folleto Tecnico. 
Misc. Publ. Entomol. Soc. Amer. — Miscellaneous Publications 
of the Entomological Society of America. 
Miss. Agr. Forest. Exp. Sta. Annu. Rep. — Mississippi Agricul- 
tural and Forestry Experiment Station Annual Report. 
Mitt. Biol. Bundesanst. Land- Forstwirtsch. Berlin-Dahlem — 
14 
Mitteilungen aus der biologischen Bundesanstalt fuer Land- 
und Forstwirtschaft Berlin-Dahlem. 
Mont. State Univ. Coop. Ext. Serv. Leafl. — Montana State 
University Cooperative Extension Service Leaflet. 
N. Mex. Agr. Exp. Sta. Bull. — New Mexico Agricultural Ex. 
periment Station Bulletin. 
Nebr. Agr. Exp. Sta. Bull. — Nebraska Agricultural Experimen{ 
Station Bulletin. 
Nebr. Agr. Exp. Sta. Res. Bull. — Nebraska Agricultural Exper. 
iment Station Research Bulletin. 
Nev. Agr. Exp. Sta. Circ. — Nevada Agricultural Experimen; 
Station Circular. 
Okla. Agr. Exp. Sta. Bull.— Oklahoma Agricultural Experi 
ment Station Bulletin. 
Okla. Agr. Exp. Sta. Processed Ser. — Oklahoma Agricultura 
Experiment Station Processed Series. 
Pr. Nauk. Inst. Ochr. Rosl. — Prace Naukowe Instytutu Och 
rony Roslin. 
Probl. Agr. — Probleme Agricole. 
Proc. 10th Int. Congr. Entomol. (Montreal) — Proceedings o 
the 10th International Congress of Entomology (Montreal) 
Proc. 12th Int. Congr. Entomol. (London) — Proceedings o 
the 12th International Congress of Entomology (London) 
Proc. Forage Insect Res. Conf.— Proceedings of the Forag 
Insect Research Conference. 
Proc. Indiana Acad. Sci. — Proceedings of the Indiana Acad 
emy of Science. 
Proc. N. Cent. Br. Entomol. Soc. Amer. — Proceedings of th 
North Central Branch, Entomological Society of Americz 
Progr. Agr. Ariz. — Progressive Agriculture in Arizona. 
Rep. Alfalfa Impr. Conf. — Report of the Alfalfa Improvemer 
Conference. 
S. Dak. State Univ. Coop. Ext. Serv. Handb. — South Dakot 
State University Cooperative Extension Service Handbool 
S. Pasture Forage Crop Improv. Conf. Rep. — Southern Pastur 
and Forage Crop Improvement Conference Report. 
Tex. Agr. Exp. Sta. Progr. Rep. — Texas Agricultural Exper 
ment Station Progress Report. 
U.S. Dep. Agr. Agr. Handb. — United States Department « 
Agriculture, Agriculture Handbook. 
U.S. Dep. Agr. Agr. Res. Serv. Prod. Res. Rep. — United Stat: 
Department of Agriculture, Agricultural Research Servic 
Production Research Report. 
U.S. Dep. Agr. ARS 22-— United States Department of Agr 
culture, Agricultural Research Service #22 Series. 
U.S. Dep. Agr. ARS 33-— United States Department of Agi 
culture, Agricultural Research Service #33 Series. 
U.S. Dep. Agr. Leafl.— United States Department of Agricu 
ture Leaflet. 
Univ. Calif. Publ. Entomol. — University of California Public 
tions in Entomology. 
Univ. Mo. Coop. Ext. Serv. Handb. — University of Missou 
Cooperative Extension Service Handbook. 
Utah Agr. Exp. Sta. Mimeo. Ser. — Utah Agricultural Expei 
ment Station Mimeograph Series. 
Utah Agr. Ext. Serv. Entomol. Mimeo Ser. — Utah Agrict 
tural Extension Service, Entomology Mimeo Series. 
Utah Agr. Ext. Serv. Leafl.— Utah Agricultural Extensi 
Service Leaflet. 
Utah Agr. Ext. Serv. Mimeo. Ser. — Utah Agricultural Exte 
sion Service Mimeograph Series. 
Utah Ext. Leafl. — Utah Extension Leaflet. 
Va. Agr. Exp. Sta. Tech. Bull. — Virginia Agricultural Expe 
ment Station Technical Bulletin. | 
Va. Polytech. Inst. Ext. Div. Contr. Ser. — Virginia Polytecht 
Institute Extension Division Control Series. | 
Zool. Listy — Zoologické Listy. 
Zool. Verh. Rijksmus. Natuur. Hist. Leiden — Zoologische V' 
handelingen Rijksmuseum van Natuurlijke Historie Leide 
