62 
BULLETIN 1330, U. S. DEPARTMENT OF AGRICULTURE 
Internatl. Inst. Agr. [Rome]. 
See also Inst. Internatl. Agr. 
[Rome]. 
Internatl. Jour. Pub. Health. 
Internatl. Labor Off. [Geneva], 
Internatl. Labor Rev. 
Studies and Rpts. 
Internatl. Mitt. Bodenk. 
Internatl. Rev. Agr. Ecen. 
[Rome]. 
Internatl. Rev. Sci. and Pract. 
Agr. [Rome]. 
Internatl. Sugar Jour. 
Internatl. Ztschr. Phys. Chem. 
Biol. 
Iowa Acad. Sci. Proc. 
Iowa Agr. 
Iowa Agr. Col. 
Ext. Bui. 
Ext. Serv., Home Econ. 
Circ. 
Iowa Agr. Col. Off. Pub. 
Iowa Bd. Vocat. Ed. Bien. Rpt. 
Iowa [Bd. Vocat. Ed.] Vocat. 
Ed. Bui. 
Iowa Bur. Labor Statis. [Bien.] 
Rpt. 
Iowa Dairy and Food Commr. 
Rpt. 
Iowa Engin. Expt. Sta. Bui. 
Iowa Engin. Soc. Proc. 
Iowa Engineer. 
Iowa Geol. Survey Bui. 
Iowa Jour. Hist, and Politics. 
Iowa State Apiarist Rpt. 
Iowa State Highway Comn. 
Ann. Rpt. 
Serv. Bui. 
Iowa State Hort. Soc. Rpt. 
Iowa State Teachers Col. Bui. 
International Journal of Public Health.. 
Geneva. 
International Labour Office, Geneva. 
International Labour Review. London. 
Studies and Reports. Geneva. 
Internationale Mitteilungen fur Bodenkunde- 
Berlin. 
International Review of Agricultural Eco- 
nomics. Published by the International 
Institute of Agriculture. Rome. 
International Institute of Agriculture. Bu- 
reau of Agricultural Intelligence and Plant 
Diseases. International Review of the- 
Science and Practice of Agriculture. Rome.. 
The International Sugar Journal. London. 
Internationale Zeitschrift fur Physikalische- 
Chemische Biologic Leipzig and Berlin. 
Proceedings of the Iowa Academy of Science.- 
Des Moines. 
Iowa Agriculturist. Ames. 
Iowa State College of Agriculture and Me- 
chanic Arts. Extension Service. Agricul- 
ture and Home Economics. Ames. 
Extension Service Bulletin. 
Home Economics Circular. 
Iowa State College of Agriculture and Me- 
chanic Arts. Official Publication. Ames. 
State of Iowa. Biennial Report of the State 
Board for Vocational Education. Des 
Moines. 
Iowa Vocational Education Bulletin. Issued 1 
by State Board for Vocational Education.. 
Des Moines. 
Report of the Bureau of Labor Statistics for- 
the State of Iowa. Des Moines. 
State of Iowa. Report of the Dairy and Food ; 
Commissioner. Des Moines. 
Iowa State College of Agriculture and Me- 
chanic Arts. Bulletin. Engineering Ex- 
periment Station. Ames. 
Proceedings of the Annual Meeting Iowa. 
Engineering Society. Iowa City. 
The Iowa Engineer. Ames. 
Iowa Geological Survey. Bulletin. Des 
Moines. 
The Iowa Journal of History and Politics-. 
Iowa City. 
State of Iowa. Report of the State Apiarist.. 
Des Moines. 
Iowa State Highway Commission.. Ames. 
Annual Report. 
Service Bulletin. 
State of Iowa. Report of the Iowa- State- 
Horticultural Society. Des Moines. 
Bulletin of the Iowa State Teachers- College- 
Cedar Falls. 
