TY  - BOOK
AU  - Petrovich,Michael B.
AU  - 
TI  - The human achievement. 
U1  - 902/PEH 
PY  - 0000///Silver Burdett
PY  - 1967///
CY  - New Jersey 
KW  - Chronology - Historical
KW  - Chronology
N1  - Includes index and bibliography.
ER  -