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Pollen Morphology and Plant Taxonomy: Pteridophyta (text and additional illus.) by G. Erdtman and P. Sorsa, with special chapters by J. Pettitt and B. Gullvag

Gunnar ErdtmanP. Sorsa

出版	Almqvist & Wiksell, 1952
URL	http://books.google.com.hk/books?id=U_wUAQAAIAAJ&hl=&source=gbs_api