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Code of Federal Regulations: Record 2: 2007- - Page 460
Index Medicus - Volume 45, Issue 7, Part 1 - Page 420
Library of Congress Subject Headings - Page 5637
A Practical Field Guide to Weeds of Rice in Asia
United States Plant Patents - Page 11
Weekly Weather and Crop Bulletin - Volume 87, Issue 51
Weekly Weather and Crop Bulletin - Volume 88, Issue 12
Journal of the National Cancer Institute: JNCI. - Volume 92, Issues 1-4
Manual of Seed Handling in Genebanks
Volcanic Unrest: From Science to Society