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Guaymango, El Salvador

Rodrigo De Sousa Hernandez

其他書名	Agronomic and Economic Modeling of Soil Conservation and Agricultural Productivity in Relay Cropping Systems
出版	University of California, Davis, 2000
URL	http://books.google.com.hk/books?id=hUrSNnG7OpEC&hl=&source=gbs_api