Pequignot, C. A.
Tunnels and tunnelling - 1st ed. - London Hutchinson 1963 - xii, 555 p. illus. 24 cm.
Includes bibliographies
Tunnelling
624.19 / PEQ/1963
Tunnels and tunnelling - 1st ed. - London Hutchinson 1963 - xii, 555 p. illus. 24 cm.
Includes bibliographies
Tunnelling
624.19 / PEQ/1963