00310nam a2200097Ia 4500008004100000082004100041100004000082245004900122260003300171300000800204140113s9999    xx            000 0 und d  a"581.133.1""1977.9.19""(082.2)   L9"  a"Hewitt, E.J. & Cutting, C.V., Ed."  aSymposium on Nitrogen Assimilation of plants  a1979bAcademic PresscLondon  a708