WINKELMAN JE (1997) Book reviews: Porter, RF., ... (et al), Southern Yemen and Socotra: the report of the OSME survey in spring 1993. 1996. LIMOSA 70 (2): 84-85.
PORTER R. F. & MARTINS R. P. 1996. Southern Yemen and Socotra: the report of the OSME survey in spring 1993. Sandgrouse 17. 188 p.
