CONTENTS OF BORON AND ZINC IN PURPLISH SOIL AND YELLOW EARTH OF SICHUAN AND EVALUATION FOR AGRICULTURE
Cheng Yanao, Yang Dingguo, Wen Yanmao
SCIENTIA GEOGRAPHICA SINICA ›› 1986, Vol. 6 ›› Issue (2) : 141-150.
CONTENTS OF BORON AND ZINC IN PURPLISH SOIL AND YELLOW EARTH OF SICHUAN AND EVALUATION FOR AGRICULTURE
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