TY  - RPRT
TI  - Venus: Preliminary topographic and surface imaging results from the Pioneer Orbiter
AU  - G.H. Pettengill
AU  - P.G. Ford
AU  - W.E. Brown
AU  - W.M. Kaula
AU  - H. Masursky
AU  - E. Eliason
AU  - G.E. McGill
PY  - 1979
DO  - 10.1126/science.205.4401.90
UR  - https://pubs.usgs.gov/publication/70012254
ID  - 70012254
ER  -