Tài nguyên được gắn thẻ với: Fertilizers Handbooks And Manuals

2 đề mục được tìm thấy (Hiển thị 1 - 2)

  1. Soils, crops, and fertilizer use

    10-01-1986 This field manual for development workers is desgned for those working with limited resource farmers and gardeners. It is well suited as a high school or university textbook. 338 pages, illustrations
    Fertilizers-Handbo... Subsistence Farming

  2. The Farmer's fertilizer handbook: how to make your own NPK recommendation-- and make them pay

    01-01-1986
    Fertilizers-Handbo...