TY  - BOOK
AU  - Ravindra Kumar
TI  - Fundamentals of historical geology and stratigraph
U1  - H5.2.N8, M5 
PY  - 1985///
CY  -  New Delhi 
PB  - Wiley Eastern India       
KW  - Geology
N1  - Bib p. 227-41
ER  -