1. The Study of Trace Fossils :
Author: edited by Robert W. Frey.
Library: Center and Library of Islamic Studies in European Languages (Qom)
Subject: Geography.
Classification :
QE720
.
5
E358
1975
2. The study of trace fossils; a synthesis of Principles, Problems and Procedures in Ichnology
Author: Frey, Robert W.
Library: Central Library and Information Center of Ferdowsi University of Mashhad (Khorasan Razavi)
Subject: Trace fossils
Classification :
QE
720
.
5
.
F73
3. The study of trace fossils : a synthesis of principles, problems, and procedures in ichnology
Author: Frey, Robert W
Library: Library of College of Science University of Tehran (Tehran)
Subject: ، Trace fossils
Classification :
QE
720
.
5
.
F73
