text Amsterdam Elsevier Publishing Company 1968 xii, 342 p. : ills. ; 23 cm. I. Arnon AGRICULTURE, PERTANIAN UMUM RESEARCH ORGANIZATION ADMINISTRATION 63.001.5 ARN o 241213 20241213034505 INLIS000000000001465 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)