DITMARS, Raymond L. <br/><br/>
A field book of north american snakes / 
[by] Raymond L.Ditmars 
 - New Delhi  International books & periodicals supply service  1985 
 - xii, 305, 48 p. 
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Snakes<br/> Serpentes
<br/><br/><label>Dewey Class. No.: </label>597.96  / DIT