[1] ELECTROTECH LAB,TANASHI,TOKYO 188,JAPAN
[2] NASA,LYNDON B JOHNSON SPACE CTR,HOUSTON,TX 77058
[3] NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812
[4] SW RES INST,SAN ANTONIO,TX 78284
[5] STANFORD UNIV,STANFORD,CA 94305
[6] NATL INST POLAR RES,TOKYO,JAPAN
[7] TRW,LOS ANGELES,CA 90278