TY  - BOOK
AU  - Allan J A ed
TI  - Sahara :  ecologicaol change and early economic history
U1  - U287.6.9R.dS, L8 (906) 
PY  - 1978///
CY  - London
PB  - School of Oriental and African Studies  
KW  - GEOGRAPHY
N1  - Includes bib
ER  -