
j Froggatt, iW. W., A descriptive catalogue of the scale insects ("Coccidae" ) 
Ss of Ausvralia. pie 26 159 psy illus. (New South Wales Dept. of Agr. 
pel. Bule 18) Sydney,. June, 1921, 
Gebien, Hans. Coleoptera. Tenebrionidae. ps. 213-500, illuse, ple 11 
(Nova Guinea Resultats de 1'Expedition neerlandais a la Nouvelle Guinee 
en 1912 et 1913.+e+Ve0.13, Zool. livr. 3) Leide, Librairie & Imprimerie 
Oa wie SPL L, 19204 
Langeron, M., Precis de microscopie.~ technique- experimentation diagnostice 
ed 3. 916 pe Paris, Masson et Cie, 1921. 
Lee, J. M. ed. Business writings 611 p. (Language for men of affairs, Vs 2) 
N. Ye, The Ronald Press Company, 1920. 
uw . 
-Léhns, F. Studies upon the life cycles of the bacteria. Part I. Review of 
the literature 1638-1918, 252 pe, ple A= S and I-XXII (Memoirs Nate 
Acads Scie, ve 16, Mem. 2) Washington, Government Printing Office, 1921. 
Mordvilko, A. K. Aphidodea, livr. 2. (Faune de la Russie Insectes hemipteres 
(Insecta Hemiptera) v. 1, livr. 2) Petrograd, 1919. 
Petch, T, The diseases and pests of the rubber tree. 278 pe» 6 cole ple 
London, Macmillan & Coss lide, 1921, Bibliography, pe 268-274 
Sahlberg, J. Enumeratio Hemipterorum Heteropterorum Favunae Fennicaes Editio 
2. 227 pe, illus.. Helsingfors centraltiryckeri (Bidrag till Kannedom 
af Finlands natur och folk utgifna af Finska veternskaps-societeten, 
H. 79, N:o 2) Helsingfors, 1920. 
Sharp, Ls W. An introduction to cytology 452 pe, illus. Ne. Ye and London, 
McGraw-Hill Book Company, Ince, 1921. 
Woodworth, #. EH. A host index of insects injurious to Philippine crops, 
Philippine agriculturist, v- 10, no. 1, pe %&35, August, L921e 
. 
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