A middle stone age sequence from the Central Rift Valley, Ethiopia
By: [by] Fred Wendorf and Romuald Schild with chapter on geological setting by Claude C. Albritton, Jr. [and] chapter on mammalian remains by Achilles Gautier and contributions of H. Wieckowska [and others]
Publisher: Wydawnictwo Polskiej Akademii Nauk
Published: 1974
Place of publication: Wroclaw
Language: eng
Number of pages: 232
Subjects: Geology; Antiquities
Notes: At head of title: Polska Akademia Nauk Instytut Historii Kultury Materialnej.

Errata slip inserted.

Polish summary.