00585nam a2200133Ia 4500008004100000082002900041100002100070245011300091260005700204300001300261490008700274600001900361650007100380140224s9999    xx            000 0 und d  a631.814:633.841(911.14)   ade Waard, P.W.F.  aCommunication: Foliar diagnosis, nutrition and yield stability of black pepper (Piper Nigrum L.) in Sarawak.  aAmsterdambKoninklijk Institute Veor De Tropenc1965  axi,149p.  aRoyal Tropical Institute Department of Agricultural Research, Communication; no.58  aP.W.F.de Waard  aPepper,Foliar diagnosis,Plant-nutrition,Black pepper,Leaf analysis