=LDR 22 4500 =001 5104 =082 04$a631.4 COU =100 1\$aCourtney, F. M. =245 10$aThe soil =260 \\$aLondon :$bEdward Arnold,$c1984 =650 \0$aReserve =700 1\$aTrudgill, S. T. =852 \\$bFreeman Library$h631.4 COU