By Dewey, Melvin, 1851-1931.
Bogotá : Rojas Eberhard .
4 v. 958-9121-11X

By Mortimer, Mary.
Colombia : Rojas Eberhard .
256 p. 928-9121-60-8

By Furrie, Betty.
Colombia : Rojas Eberhard .
36 p. 958-9121-61-6

By Gosling, Mary.
Colombia : Rojas Eberhard .
142 p. 958-9121-59-4

By Brumm, Eugenia K.
Colombia : Rojas Eberhard .
xxxiv, 524 p. 958-9121-09-8

Colombia : Rojas Eberhard .
v, 176 p. 958-9121-32-2

By Chan, Lois Mai.
Santafé de Bogotá : Rojas Eberhard Editores .
212 p. 958-9121-05-5

By Mortimer, Mary.
Bogotá : Rojas Eberhard Editores .
122 p. 958-9121-62-4