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Honey Bee (apis Mellifera L.) and Bumble Bee (Bombus Impatiens Cresson) Pollination Efficacy on Field-grown Cucumber and Watermelon

Michael Scott Stanghellini

出版	North Carolina State University, 2000
URL	http://books.google.com.hk/books?id=FAVKAAAAYAAJ&hl=&source=gbs_api