Abd El Hady, Mohamed Rida. <br/><br/>
Studies on zinc and manganese status of Dakahlia Governorate soils  [microform] / 
Mohamed Rida Abd El Hady. 
 -  1990. 
 - 94, 5 leaves :  ill. ;  30 cm. 
<br/><br/>Thesis (M.S.)-- El-Mansoura University, 1990. 
<br/><br/>Includes bibliographical references (leaves 82-94) 
<br/><br/><br/>Microfiche. <br/>ASUNET, <br/>Ain Shams University, <br/>2 microfiches : negative. 
<br/><br/><br/>Summary in Arabic. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soils--Heavy metal content.<br/>Soils--Manganese content.<br/>Soils--Zinc content.