00321nam a2200097Ia 4500008004100000082001900041100005000060245006200110260004400172300000700216140113s9999    xx            000 0 und d  a016:631.8   L1  aCommonwealth Bureau of Agricultural Economics  aEconomics of fertilizer use (Annotated Bibliography No.4)  a1971bCABcFarnham Royal(Bucks) London)  a22