Martin, A.C.; Barkley, W.D. 2000. Seed identification manual. Caldwell, NJ: The Blackburn Press. 221 p.

Martin, A.C.; Barkley, W.D. 2000. Seed identification manual. Caldwell, NJ: The Blackburn Press. 221 p.

Martin, A.C.; Barkley, W.D. 2000. Seed identification manual. Caldwell, NJ: The Blackburn Press. 221 p.

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