TY  - BOOK
AU  - Chisnall,G.A.
AU  - Fielder,Gilbert
TI  - Astronomy and spaceflight
AV  - QB500 .C46
PY  - 1962///]
CY  - London
PB  - Harrap
KW  - Astronomy
KW  - Astronautics
KW  - Research
N1  - Bibliography: p. 207-209
ER  -