00307pam a2200121 a 4500020001700000041000800017082001300025100002100038245007000059260003600129300000800165653001200173  a071666061Xc  aeng  a000bWOR  aWorld Book, Inc.  aYoung Scientist : Our World in Danger Vol - 19hTextual Documents  aChicagobWorld Book, Inc.c1992  a62.  aGeneral