"No serious astronomical library can be complete without it."
– Journal of the British Astronomical Association
"The book contains the results of the exploration of Venus by spacecraft during the period 1962-1978 [...] The book represents an excellent review of the principal results of Venus in the period covered."
– Bulletin of the Astronomical Institute of Czechoslovakia
"A wealth of new information."
– Science
"Strongly recommended."
– Science Books & Films