A handbook of the principal trees and shrubs of the Ancon and Balboa Districts, Panama Canal Zone, subdivided into sections according to location of plants.

By Canal Zone..
[Washington] 1925 .
1 p. l., 7-97 p. , On cover: Trees and shrubs of Ancon and Balboa Districts, Canal Zone. | Preface signed: Holger Johansen. | Includes index. 26 cm..

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Course of study, Canal Zone high schools. Isthmus of Panama.

By Canal Zone..
Mount Hope, Panama Canal Press, 1916 .
38 p. 23 cm..

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A handbook of the principal trees and shrubs of the Ancon and Balboa Districts, Panama Canal Zone, subdivided into sections according to location of plants.

Course of study, Canal Zone high schools. Isthmus of Panama.