00263nam a2200097Ia 4500008004100000082002100041100002000062245003300082260003100115700001900146220204s9999    xx            000 0 und d  a338.43.01bDAV;3  aDAVIDSON,  Joan 0aConservation and agriculture  aNew YorkbJohn Wileyc1977  aLLOYD, Richard