"Recursos naturals." . . "Équateur." . . "Geografia econòmica." . . "Geografia humana." . . "Topografia." . . "Condicions socials." . . . . "Ecuador : its ancient and modern history, topography, and natural resources, industries, and social development" . . "Ecuador : geografia humana" . . "Ecuador : its ancient and modern history topography and natural resources industries and social development" . "Ecuador"@en . . . . "Ecuador : su historia antigua y moderna, su tipografía y recursos naturales, sus industrias y su desarrollo social" . "Ecuador geografia humana" . . . . . . "History" . . "Ecuador : geografía humana : su historia antigua y moderna, topografía, recursos naturales, industrias y desarrollo social" . . "Ecuador, ist ancient and modern history, topography and natural resources industries and social development" . . "Ecuador, its ancient and modern history, topography and natural resources, industries and social development, by C. Reginald Enock" . . . . . . . "Ecuador : geografia humana ; su historia antigua y moderna, topografia, recursos naturales, industrias y desarrollo social" . "Ecuador : its ancient and modern history, topography and natural resources, industries and social development"@en . "Ecuador : its ancient and modern history, topography and natural resources, industries and social development" . "Ecuador. : Its ancient and modern history, topography and natural resources, industries and social development" . . . . . "Ecuador; its ancient and modern history, topography and natural resources, industries and social development"@en . "Ecuador; its ancient and modern history, topography and natural resources, industries and social development" . . "Ecuador : geografía humana ; su historia antigua y moderna, topografía, recursos naturales, industrias y desarrollo social" . . . "Ecuador; su historia antigua y moderna, su topografía y recursos naturales, sus industrias y su desarrollo social" . . . . . "Ecuador its ancient and modern history, topography and natural resources, industries and social development" . "Ecuador its ancient and modern history, topography and natural resources, industries and social development"@en . . . . . . . "Ecuador : its ancient and modern history, topography, and natural resources, industries and social development"@en . . . . . . . . . . . . . "Ecuador : geografía humana, su historia antigua y moderna, topografía, recursos naturales, industrias y desarrollo social" . "Equador." . . "Ecuador." . . "Ecuador" .