TY - RPRT TI - Structure of the atmosphere of Venus up to 110 kilometers: Preliminary results from the four Pioneer Venus entry probes AU - A. Seiff AU - D.B. Kirk AU - S.C. Sommer AU - R.E. Young AU - R.C. Blanchard AU - D.W. Juergens AU - J.E. Lepetich AU - P.F. Intrieri AU - J.T. Findlay AU - J.S. Derr PY - 1979 DO - 10.1126/science.203.4382.787 UR - https://pubs.usgs.gov/publication/70012463 ID - 70012463 ER -