The Study of Trace Fossils :  a Synthesis of Principles, Problems, and Procedures in Ichnology / 
edited by Robert W. Frey. 
 - Berlin, Heidelberg :  Springer Berlin Heidelberg,  1975. 
 - xiv, 562 p. :  ill. ;  28 cm. 
<br/><br/>Include Bibliography and Index. 
<br/><br/><label>ISBN: </label>3540068708 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earth Sciences
<br/><br/><label>Dewey Class. No.: </label>550  / STU 1975