=LDR 22 4500 =001 495 =082 04$a333.70941 BAY =245 00$aBritain's changing environment from the air =260 \\$aLondon :$bCambridge University Press,$c1990 =650 \0$aBooks =700 1\$aOwens, Susan E. =700 1\$aBayliss-Smith, Timothy P. =852 \\$bFreeman Library$h333.70941 BAY