=LDR 22 4500 =001 443 =082 04$a551.609 JOH =100 1\$aJohnson, C. G. =245 10$aThe biological significance of climate changes in Britain =260 \\$aSan Diego :$bAcademic Press,$c1965 =650 \0$aBooks =700 1\$aSmith, L. P. =852 \\$bFreeman Library$h551.609 JOH