00546naa a2200181 a 450000100080000000500110000800800410001910000170006024501190007726000090019665000200020565000090022565000170023465000110025165300210026265300190028377300620030213660072013-09-13       1983    bl ---       0--  u    #d1 aGUPTA, U. C.  aBoron deficiency and toxicity symptoms for several crops as related to tissue boron levels.h[electronic resource]  c1983  aAnálise Foliar  aBoro  aDeficiência  aPlanta  aBoron deficiency  aPlant analysis  tJournal of Plant Nutritiongv. 6, n. 5, p. 387-395, 1983.