Nigam, Harish C. <br/><br/>
Biology of diordates :  taxonomy, comparative, functional, anatomy, physiology, embryology, genetics, evolution ecology & experimental physiology with 530 illustrations / 
by Harish C. Nigam. 
 - Co., Jalandhar :  Shoban Lal Nagin Chand,  1983 
 - 942 p., i-xiv :  ill. ;  21 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chordata.<br/>Vertebrates.