TY - BOOK PB - Dept. of Earth and Planetary Sciences, Johns Hopkins University ; National Aeronautics and Space Administration TI - The delineation and interpretation of the earth's gravity field [microform] T3 - NASA contractor report ; NASA CR-185333. KW - Gravitational fields. A2 - Johns Hopkins University. Department of Earth and Planetary Sciences A2 - United States. National Aeronautics and Space Administration CY - Baltimore, Md. : [Washington, D.C.? N1 - Distributed to depository libraries in microfiche. PY - 1989 M1 - Accessed from https://nla.gov.au/nla.cat-vn4020887 ER -