=LDR 22 4500 =001 106 =082 04$a979.4 GRE =100 1\$aGregor, Howard F. =245 10$aAn agricultural typology of California =260 \\$aBudapest :$bAkademiai Kiado,$c1974 =650 \0$aBooks =852 \\$bFreeman Library$h979.4 GRE