1. 01/01/1970 Rev. Ed. 177 pp : charts, graphs Factors influencing crop growth Gift of Dr John Phillip Bishop, June 28, 2023
  2. Ressource principale 01/01/1996 This is a book of practical ideas. It is written for people who help those who live and make their living under difficult conditions in the tropics and subtropics. What should a development worker do to assist a community? There are no simple answers, but there are many possibilities—plants,...