Copy Reference Expanding Sources of Fertilizer and Using It Rationally
Year:1977 Issue:6
Column: ARTICLES
Author:
Release Date:1977-06-01
Page: 19,20
Full Text:
China's Eight-point Charter for Agriculture, formulated in 1958 by Chairman Mao, concerns soil, fertilizer, water conservation, seed selection, rational close planting, plant protection, reform of...
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