TY  - BOOK
AU  - Branley, Franklyn M
TI  - Space colony: frontier of the 21st century 
SN  - 0-525-66741-5
U1  - IBED/ECir. 629.44'2 B821 1983 
PY  - 1983///
CY  - New York
PB  - Elsevier
KW  - Space colonies
N1  - Includes biographical records
ER  -