Et Al. None

idbiblio	auteurs	support	annee	ext.	pages
La pesca de arrastre en los fondos del Cabo Blanco y de Banco Arguin (Africa Sahariana) : 115-164, fig., pl. 12-37. Trabajos / Instituto Espanol de Oceanografia, Madrid, 18
2571	Navarro (de P.) F., Lozano L., Navaz J.M., Otero E., Sainz Pardo J., Et Al.	Journal	1943	#	1-225,38 pl.
Limnological and fishery investigations of the Nozha Hydrodrome near Alexandria, Egypt, 1954-56. Notes and Memoirs / Hydrobiological Department, Ministry of Agriculture, United Arab Republic, 43
3883	Elster H.J., Jensen K.W., Et Al.	Journal	1960	#	99 p.,40 tab.,28 fig.
On the use of antigenic relationships among species for the study of molecular evolution. 2. The lens proteins of the Choanichthyes and early Actinopterygii. International Archives of Allergy and Applied Immunology, 31
5082	Manski W., Et Al.	Journal	1967	#	475-489,5 fig.
Grandes zones écologiques du Lac Tchad. Cahiers Orstom, série Hydrobiologie, 6 (2)
6061	Carmouze J.P., Dejoux C., Durand J.R., Gras R., Iltis A., Lauzanne L., Et Al.	Journal	1972	#	103-169,36 fig.
Palaeo-ecology. In Rzoska J. (ed.), The Nile, biology of an ancient river. The Hague, Monographiae biologicae 29, 417 p., 101 fig.
7392	Rzoska J., Et Al.	Chapter	1976	#	33-45.