1. 2003-02-01 This Manual is the second in a series of readable, well illustrated handbooks about propagating and planting tropical trees.The five Manuals have been designed to provide clear and concise information on how to select, grow, plant and care for tropical trees, in both moist and drier parts of the...
  2. Key Resource 2007-01-01 Though nearly all plants are useful in some way, they are not equally valuable. For example, wheat, rice and corn may be considered the most valuable plants in the world based on the vast acreage planted to these crops, their vital role in feeding humankind, and their enormous economic value....