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Soils of the Semi-arid Savanna Zone of North-eastern Kenya

Wim G. SombroekJ. P. MbuviH. W. Okwaro

出版	Republic of Kenya, Ministry of Agriculture, National Agricultural Laboratories, Kenya Soil Survey, 1976
URL	http://books.google.com.hk/books?id=0xDLoXZ4aVgC&hl=&source=gbs_api