00335nam a2200109Ia 4500082002300000100003700023245005500060260005900115300001500174500000500189700003100194  a519.50184bW814.PP  aWishart, John and Sanders, H. G.  aPrinciples and practice of field experimentationb  aFarnham RoyalbCommonwealth Agricultural Bureauxc1958  avii, 133p.  a  aSanders, H. G. ; jt. auth.