00501     2200157   4500001002100000008004100021035002000062245008400082100004100166084001800207520006300225082001100288650001000299650001900309990001500328INLIS000000000002750                                   Ind    a0010-1118002750  aQuantitative root ecology as element of soil fertility theorycNOORDWIJK, M.van  aM. van Noordwijk and P. de Willigen.  aBr.631.45NOOq  aRepr. from : Neth. Journ. Agric. Sci., 34, 1986: p.273-281  a631.45  aROOTS  aSOIL FERTILITY  a0804/MS/87