El Clark, Ronald William. Manley, Gordon. text bibliography sp Barcelona Salvat c1973 1973 monographic spa 188 p., [12] leaves of plates col. ill., maps 18 cm. specialized [colaboradores de la obra, Ronald W. Clark ... et al. ; comité de redacción, Gordon Manley ... et al.] Translation of: Geography, our planet, its peoples and resources. Bibliography: p. 187-188. Geography G127 .G418 1973 910 8434573105 9788434573109 FXG 830720 20160527200740.0 284003