Resumen estadistico del Sahara espa~nol (A~no 1969). 

 - Madrid :  C.S.I.C.,  1970. 
<br/><br/> At head to the titles: Direccion General de promocion de Sahara Institute de Estudios Africanos. 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Sahara -- Economic conditions.--Sahara -- Economic conditions.