00717nam a22002417a 4500001001000000003000500010005001700015008004100032010001000073011001000083035001000093040000900103100001800112245010600130260004500236300002100281490002800302650002600330650003600356650002300392650003200415830002800447000021773CHAP20220817041642.0971013s1960            r     00010     d  a20730  a21702  a25793  cCHAP00aArmson, K. A.10aWhite spruce seedlings :b: the growth and seasonal absorption of nitrogen, phosphorus and potassium.  aToronto :bUniversity of Toronto,c1960.  a37 p. :b: ilus.1 aForestry bulletinv; 6614aFósforo en plantas.14aNitrógenoxEfecto en plantas.14aPicea canadiensis.14aPotasioxEfecto en plantas.0 aForestry bulletinv; 66