Letteer, C. R. Experiments in crop production on fallow land at San Antonio / by C.R. Letteer. - Washington, D.C. : U.S. Dept. of Agriculture, 1914. - 10 p. : ill. ; 23 cm. - Bulletin of the U.S. Department of Agriculture ; no. 151 . Contribution from the Bureau of Plant Industry. LCCN: agr14001451 Subjects--Topical Terms: Fallowing.Field experiments--Texas--San Antonio. LC Class. No.: S21 / .A7 no. 151 National Agricultural Library Call No.: 1 / Ag84B no.151