00310nam a2200097Ia 4500008004100000082003600041100004200077245004700119260003800166300000800204140113s9999    xx            000 0 und d  a"581.133.1""1972"" (082.2)  L3"  a"Godwin, T.W. & Smellie, R.M.S., Ed."  aSymposium on Nitrogen metabolism in plants  a1973bBiochemical SocietycLondon  a351