TY  - BOOK
AU  - Helvey,T.C.
TI  - Moon base: technical and psychological aspects
U1  - 629.454 
PY  - 1960///
CY  - Newyork
PB  - John F. Rider
KW  - Space flight to the moon
KW  - United states
KW  - Moon
KW  - Exploration
ER  -