//-->
Minimum land requirements and adjustments for specified income levels, Southwestern Oklahoma
Strickland, Percy L., (1963)
Organization and operation of farms in the Claypan Areas of Southern Illinois
Cross, A. J., (1954)
Our 100000 biggest farms : their relative position in American agriculture
Nikolitch, Radoje, (1964)
Income, wealth, and opportunities of the farm population
Madden, J. Patrick, (1970)
Poverty measures as indicators of social welfare
Madden, J. Patrick, (1975)
Social change and public policy in rural America : data and research needs for the 1970's