TY  - BOOK
AU  - Ponnamperuma,Cyril
AU  - Cameron,A.G.W.
TI  - Interstellar communication: scientific perspectives 
SN  - 0395178096 :
U1  - 523.13 
PY  - 1974///
CY  - Boston
PB  - Houghton Mifflin
KW  - Life on other Planets
KW  - Interstellar communication
N1  - Bibliography: p. 187-226
ER  -