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2
-
Cowpeas (Vigna unguiculata L. Walp) : abstracts of world literature / [ed. by Lynette Yip Young...et al.].
- International grain legume information centre,
- 1977-1981.
- Ibadan :
-
Essays of an information scientist / by Eugene Garfield.
- ISI Press,
- 1977-1981.
- Philadelphia, PA :