Crust formation in highly calcareous soils [microform] /
تكوين القشرة السطحية فى الأراضى الجيرية.
by Mahmoud Youssef Afifi.
- 1974.
- 124, 4 leaves : ill. ; 26 cm.
Thesis (M.S.)--Al-Azhar University, 1974.
Includes bibliographical reference (leaves 114-124)