TY  - BOOK
AU  - Ager,D.V.
TI  - Principles of paleoecology: an introduction to the study of how and where animals and plants lived in thepast 
T2  - International series in the earth sciences
PY  - 1963///
CY  - New York
PB  - McGraw-Hill Book
KW  - Paleoecology
N1  - Includes bibliography
ER  -