Keeping options alive the scientific basis for conserving biodiversity text New York] World Resources Institute 1989 Ind vii, 128 p. : ill. ; 25 cm. vii, 128 p. : ill. ; 25 cm. Bibl. p. 111-128 REID, Walter V. RESOURCES CONSERVATION BIOLOGY 339.5 339.5:574REIk 0-915825-41 INLIS000000000002504 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)