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Preliminary Color Standards and Color Names for Soils

Thomas Donnelly Rice

出版	U.S. Department of Agriculture, 1941
URL	http://books.google.com.hk/books?id=odPgwAEACAAJ&hl=&source=gbs_api

註釋

The work presented in this publication is the result of efforts by many people. It is still preliminary and revisions will doubtless be suggested when the standards are used.