2d ed. xix, 548 p. illus., facsims., maps, ports. 24 cm.
DuVal, Miles P. (Miles Percy), 1896-
2d ed. xix, 548 p. illus., facsims., maps, ports. 24 cm.
Tangaza Mary Immaculate Library
Panama Canal (Panama)
HE 537.8 .D87 1947
2d ed. xix, 548 p. illus., facsims., maps, ports. 24 cm.
Tangaza Mary Immaculate Library
Panama Canal (Panama)
HE 537.8 .D87 1947