TY  - BOOK
AU  - Frey RW
TI  - Study of trace fossils: a synthesis of principles, problems and procedures in ichnology
U1  - 560 
PY  - 1975///
CY  - Berlin
PB  - Springer-Verlag
KW  - Fossils
KW  - Geology
KW  - Ichnology
KW  - Paleontology
ER  -