Afifi, Mahmoud Youssef.

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)


Microfiche.
Cairo, Egypt :
ASUNET,
2 microfiches : negative.


Summary in Arabic.


Calcareous soils.
Soil crusting.