00575naa a2200193 a 450000100080000000500110000800800410001910000200006024501180008026000090019865000180020770000160022570000140024170000170025570000270027270000160029970000150031577300510033021194962020-01-28       2003    bl uuuu     u00u1 u    #d1 aDINKELMEYER, H.  aNitrogen uptake from15N-enriched fertilizer by four tree crops in an Amazonian agroforest.h[electronic resource]  c2003  aHumid tropics1 aLEHMANN, J.1 aRENCK, A.1 aTRUJILLO, L.1 aSILVA JUNIOR, J. P. da1 aGEBAUER, G.1 aKAISER, K.  tAgroforestry Systemsgv. 57, p. 213-224, 2003.