McElveen, Jackson Vahl, 1922- Family farms in a changing economy / [by Jackson V. McElveen]. - Washington, D.C. : Agricultural Research Service, U.S. Dept. of Agriculture, 1957. - ii, 94 p. : ill. ; 26 cm. - Agriculture information bulletin ; no. 171 . Literature cited : p.73-74. LCCN: agr57000116 Subjects--Topical Terms: Family farms--United States. LC Class. No.: S21 / .A74 no. 171 National Agricultural Library Call No.: 1 / Ag84Ab no.171