A history of fortification from 3000 B : C. to A.D. 1700.

von Toy, Sidney
London : Heinemann, 1955.
Umfang/Format: xxiii, 262 p., : ill. ; 23 cm.

The fortified cities of India.

von Toy, Sidney
London : Heinemann, 1965.
Umfang/Format: XIV, 118 S. : zahlr. Ill. ; 22 cm.

Castles : a short history of fortifications from 1600 B.C. to A. D. 1600,

von Toy, Sidney.
London, Toronto, : W. Heinemann, ltd., [1939].
Umfang/Format: xiv, 241 p. : incl. illus. (incl. plans) plates. ; 26 cm.