=LDR 22 4500 =001 5193 =082 04$a330.9172 4 =100 1\$aHoyle, B. S. =245 10$aSpatial aspects of development =260 \\$aChichester :$bWiley,$c1974 =650 \0$aBooks =852 \\$bFreeman Library$h330.9172 4