TY  - SER
TI  - International physics & astronomy directory 1969-70
U1  - 530/.025 
PY  - 1969///
CY  - New York
PB  - W.A. Benjamin
KW  - Physics--Directories
KW  - Astronomy--Directories
KW  - Astronomy--Bibliography
KW  - Universities--Bibliography
KW  - Universities--Directory
KW  - Societies--Bibliography
KW  - Societies--Directory
ER  -