TY  - BOOK
AU  - Warwick, Donald P.
AU  - Osherson, Samuel
TI  - COMPARATIVE RESEARCH METHODS
U1  - 300.72 
PY  - 1973///
CY  - Englewood Cliffs, N. J.
PB  - Prentice-Hall
KW  - Social Science Research -- Addresses, Essays, Lectures
ER  -