TY - BOOK AU - Khatab,Khatab Abd El-Baky El-Sayed TI - Effect of different forms and rates of nitrogen fertilization on the soil pollution by nitrate and its accumulation in potato and economics of export PY - 2001/// KW - Potatoes KW - Marketing KW - Nitrogen fertilizers KW - Soil pollution KW - Fertilizers N1 - Thesis (M.S.)--Ain Shams University,2001.+PDF; Includes bibliographical references (leaves 124-148); Microfiche; Cairo,Egypt; ASUNET; 3 microfiches:negative ER -