=LDR 22 4500 =001 5013 =082 04$a2006 CAW =100 1\$aCawley, Caroline =245 10$aShifts in productivity in Lake Bogoria, Kenya =260 \\$aDublin :$bUniversity of Dublin, Trinity College,$c2006 =650 \0$aTheses =852 \\$bFreeman Library$h2006 CAW