TY  - BOOK
AU  - Frey,Robert W
TI  - The study of trace fossils: a synthesis of principles, problems, and procedures in ichnology
SN  - 0387068708
PY  - 1975///
CY  - New York
PB  - Springer-Verlag
KW  - Trace fossils
N1  - Includes bibliographies and index
ER  -