1. 01/01/1991 The result of a symposium held at the Annual Meeting of the Soil Science Society of America, in Las Vegas, October 1989. The objective of the symposium was to establish a forum for creative purposes in developing guidelines and procedures for quantitative description of map unit composition. 270...
  2. 01/11/1988 91 pages, illustrated. Part 1: Soil dwellers; Part 2: Order Oxyurida, Family Thelastomatidae, Parasites of cockroaches and bess beetles
  3. 01/01/2006 This publication includes information on soil fertility, earthworms, cover cropping, compost, mulching and intensive beds.
  4. 01/01/1984 Este papel discute a teoria geral envolvida reciclando desperdícios agrícolas e vários métodos populares. que năo faz presente detalhou exemplos práticos. é importante a tensăo que a escolha de reciclar método dependerá do tipo de desperdício disponível e no uso de fim o fazendeiro tem em mente...