TY - BOOK T1 - Principles of paleoecology an introduction to the study of how and where animals and plants lived in the past T2 - International series in the earth sciences A1 - Ager, Derek Victor LA - English PP - New York PB - Mc Graw-Hill YR - 1963 UL - https://ds.mainlib.upd.edu.ph/Record/UP-99796217606680106 OP - 371 NO - Robert R. Shrock, consulting ed. CN - QE 26 I58 A4 1963 KW - Paleoecology. KW - Environments. ER -