Potassium in The Agricultural Systems of the Humid Tropics Proceedings of the 19th Colloqium of the International Potash Institute Held in Bangkok International Potash Institute text Bangkok International Potash Institute 1985 405p; ill;23cm AGRICULTURAL SYSTEMS POTASSIUM TROPICS 631.84 631.84 INLIS000000000005944 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)