TY  - BOOK
AU  - Spencer,Edger Winston
TI  - Basic Concepts of Historical Geology
U1  - 551.7 
PY  - 1962///
CY  - New Delhi
PB  - Oxford & IBH Publishing Co.
KW  - Paleontology	
KW  - Geology, Stratigraphic	
N1  - With drawings by Elizabeth Humphris Spencer
; Part 1.Time and Rock Record--
Part 2.The Present is a Key to the Past--
Part 3.The Dawn of earth History--
Part 4.The Living and The Dead--
Part 5.Exploring The Past--
Part 6.Evolution--
Part 7.evolution of the Animals with Backbones
ER  -