00281nam a2200109Ia 4500008004100000082002100041100001400062245003500076250001200111260004000123300000800163240913s9999||||xx |||||||||||||| ||und||  aGS    585  DUT/A  aS C Dutta 3aAn introduction to Gymnosperms  a4th Ed.  bKalyani PublishersaNew Delhic1992  a269