TY  - BOOK
AU  - Allen,John
AU  - Nelson,Mark
TI  - Space biospheres
T2  - Orbit, a foundation series
SN  - 0894640119
AV  - TL795.7 .A443 1987
PY  - 1987///]
CY  - Malabar, Fla.
PB  - Orbit Book Company
KW  - Space colonies
KW  - Life support systems (Space environment)
KW  - Biosphere
N1  - Reprint. Originally published: Oracle, Ariz. : Synergetic Press, 1986; Bibliography: pages 88-89
ER  -