Aroar, Richa
Origin and evolution of vertebrates /
Ricah Arora .-
- New Delhi, India : Anmol Pub., PVT. Ltd., 2004.
- [vii], 261 p. : ill., charts, diagrs.-
- (Encyclopaedia of evolutionary biology series). .
8126115270
--Vertebrates - Origin.--Vertebrates - Evolution.