Earth Science :
Spencer, Edgar Winston.
Earth Science : understanding environmental systems / Edgar W. Spencer. - 1st ed. - Boston : McGraw-Hill, c2003. - xxi, 518 p. : col. ill., col. maps ; 28 cm.
Includes index.
0072341467 (pbk. : acid-free paper)
Earth sciences.
550 / SPE
Earth Science : understanding environmental systems / Edgar W. Spencer. - 1st ed. - Boston : McGraw-Hill, c2003. - xxi, 518 p. : col. ill., col. maps ; 28 cm.
Includes index.
0072341467 (pbk. : acid-free paper)
Earth sciences.
550 / SPE