TY  - BOOK
AU  - Hwakins, Reginald Robert
TI  - SCIENTIFIC, MEDICAL, AND TECHNICAL BOOKS PUBLISHED IN THE UNITED STATES OF AMERICA, 1930-1944
U1  - 016.5 
PY  - 1946///
CY  - Washington
PB  - 
N1  - ...Supplement ; 1949-1952
ER  -