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British Guiana : 1. the Mahdia valley, 2. the Bartica triangle, 3. the Kamarang and Kukui valleys, 4. a part of the upper Mazaruni valley / by J. Stark ... [et al.].
[S.l.] : Regional research centre of the British Caribbean, 1959.
34 p. : ill., krt., tab. ; 27 cm. 2 losse krt