00831cam a22002651a 4500 agr60000382 DLC 20260227111020.0 850621s1960 dcu bs f000 0 eng agr60000382 (OCoLC)12185365 DLC IMolD DNAL DLC premarc S21 .A74 no. 231 1 Ag84Ab no.231 N200 Csorba, Julius J. (Julius Joseph), 1924- Farm tractors : trends in type, size, age and use / [by Julius J. Csorba]. Washington, D.C. : Agricultural Research Service, U.S. Dept. of Agriculture, 1960. 16 p. ; 26 cm. Agriculture information bulletin ; no. 231 Cover title. Bibliography: p. 16. Farm tractors. 11744 11744