00411nam a2200133Ia 4500008004100000082001400041100002100055245004500076260003400121300001300155600004000168600001900208650005000227140224s9999    xx            000 0 und d  a58.084 H9  aEmerson, Fred W.  aLaboratory and field exercises in botany  aPhiladelphiabBlakistonc1949  axi,303p.  aShields, Lora Mangum., joint author  aFred W.Emerson  aBotanical laboratory,Botany-laboratory manual