TY - BOOK AU - Sheta,Tarek Hassan TI - Utilization of slowly-soluble nitrogen fertilizers in sandy soils PY - 1971/// KW - Sandy soils KW - Nitrogen fertilizers N1 - Thesis (M.S.)-- Alexandria University, 1971; Includes bibliographical references (leaves 72-83); Microfiche; ASUNET; Ain Shams University; 2 microfiches : negative ER -