SING, D. K., & SINGH, N. (2006). VEGETABLE SEED PRODUCTION TECHNOLOGY.
Chicago Style aipamenaSING, D K., and NEMPAL SINGH. VEGETABLE SEED PRODUCTION TECHNOLOGY. LUCKNOW, INTERNATIONAL BOOK DISTRIBUTING CO, 2006.
MLA aipamenaSING, D K., and NEMPAL SINGH. VEGETABLE SEED PRODUCTION TECHNOLOGY. 2006.
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