/ Indian National Science Academy, Chinese Academy of Sciences, U.S. National Academy of Sciences
Washington, D.C.
: National Academy Press,
, c2001.
xxiii, 299 p.
: ill., maps ; 23 cm.
"This study was supported by Grant No. 95-31825A-POP/PCE and 96-41812A-WER between the National Academy of Sciences and John D. and Catherine T. MacArthur Foundation and Task Order 34, NO1-OD-4139 of the Dept. of Health and Human Services"--T.p. verso.