1. AKPOKODJE E.G., (1982): The Engineering-geological properties of arid zone soils and their stabilization.Unpublished Ph.d. thesis, University of New South Wales.
2. AMERICAN SOCIETY FOR TESTING AND MATERIALS, (1975). Special procedures for testing soil and rock for engineering purposes,Special Technical Publication. 479P. 5th ed.
3. BELL F.O. (1973): Climate of Fowlers Gap Station;In ‘Lands of Fowlers Gap Station’ (Mabbatt, J.A. ed.)Fowlers Gap Res., Ser. 3, 45–63. University of New South Wales.
4. GROFT J.B., (1968): The problem in predicting the suitability of soils for cementitious stabilization.Eng. Geol. 2 (6), 397–424.
5. HORTA J.C. DE O.S. (1980): Calcrete, gyprete and soil classi-fication in Algeria.Eng. Geol., Vol. 15, No. 1/2, 15–52.