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  1. 1970-01-01 Rev. Ed. 177 pp : charts, graphs Factors influencing crop growth Gift of Dr John Phillip Bishop, June 28, 2023
  2. Key Resource 1996-01-01 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,...