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The Structure and Development of Crown Gall, a Plant Cancer, by Erwin F. Smith ... Nellie A. Brown and Lucia McCulloch ...

Erwin Frink SmithNellie A. BrownLucia Mac Culloch

出版	U.S. Government Printing Office, 1912
URL	http://books.google.com.hk/books?id=wec0QwAACAAJ&hl=&source=gbs_api