TY - BOOK AU - Singh, R.B., ed. TI - Advances in cytogenetics and crop improvement U1 - 631.5233 21st ed. PY - 1984/// CY - New Delhi PB - Kalyani Publishers KW - Crop production KW - Crop yield KW - Cytogenetics KW - Singh KW - B.D., ed KW - R.M., ed ER -