00563 a2200217 4500 Eng 585 T739s Trivedi, Bhim Shanker Singh, D. K. Structure and reproduction of the gymnosperms 2nd rev. ed. Lucknow: Shashidhar Malaviya Prakashan, 1969 ii,198p. illus. Bibliography:p. 181-189 Cordaitales Coniferales Cycadales Pteridospermales Gymnosperms ddc GEN 73088 73077 0 0 ddc 0 0 TUCL TUCL 2014-07-27 9 8 585 T739s 53470 2025-03-12 15:32:54 2025-03-03 2014-07-27 GEN