text London McGraw-Hill 1951 Ing x, 483 p.: ill.; 24 cm. Frederick Lundy Thomsen AGRICULTURAL ECONOMICS SUBSISTENCE FARMING 631.16 631.16 THO a INLIS000000000003740 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)