TY - BOOK AU - Gass, I. G., ed. AU - Smith, Peter J., ed. AU - Wilson, R. C. L., ed. TI - Understanding the Earth: a reader in the earth sciences SN - 0-262-0-7040-7 PY - 1971/// CY - Cambridge PB - MIT Press KW - Astronomy and Astrophysics Thesaurus KW - Geology ER -