00646cam a22002057a 4500003000500000005001700005008004100022010001000063011001000073035001000083040000900093100001900102245008900121260010400210300002200314490002500336650003000361650002400391830002500415CHAP20220329134548.0971013s1971            r     00010     d  a22249  a23221  a27316  cCHAP00aColwell, J. D.12aA comparison of designs of field experiments for the National Soil Fertility Project  aMelbourne :bCommonwealth Scientific and Industrial Research Organization. Division of Soils,c1971  a18 p.b: gráfs. 0aTechnical paperv; 214aDiseños experimentales.14aSuelosxFertilidad.0 aTechnical paperv; 2