TY  - GEN
AU  -   Hubbard, Henry V.
AU  -   McClintock, Miller
AU  -   Williams, Frank B.
TI  - Airports their location, administration and legal basis
U1  - 629.136 
PY  - 1930///
CY  - Cambrdge
PB  - Harvard University
KW  -   Engineering
KW  -   Airports
ER  -