Sahara and surrounding seas. Sediments and climatic changes. Proceed. of an intl. symp., Akad. d. Wiss. u. d. Literatur Mainz, 1-4 April 1979. - Sarnthein, Michael; Seibold, Eugen; Rognon, P. (Palaeoecology of Africa and the surrounding islands, 1980)