=LDR 22 4500 =001 2939 =082 04$a778.3 BAR =100 1\$aBarrett, E. C. =245 10$aIntroduction to environmental remote sensing =260 \\$aLondon :$bChapman & Hall,$c1976 =650 \0$aBooks =700 1\$aCurtis, L. F. =852 \\$bFreeman Library$h778.3 BAR