Brewster, John M. 1904-1965. Farm resources needed for specified income levels / [by John M. Brewer]. - Washington, D.C. : Agricultural Research Service, U.S. Dept. of Agriculture, 1957. - 67 p. : ill., 1 map ; 26 cm.. - Agriculture information bulletin ; no. 180 . Cover title. Includes bibliographical references. LCCN: agr58000022 Subjects--Topical Terms: Income--United States.Farms--United States. LC Class. No.: S21 / .A74 no. 180 National Agricultural Library Call No.: 1 / Ag84Ab no.180