Security Guard's Manual /
De Leon, Sixto O., c1979.
Security Guard's Manual / De Leon, Sixto O. - Philippines : JMC Press, Inc, c1979. - 193p. : illus. ; 21 cm.
Security Guard's Manual / De Leon, Sixto O. - Philippines : JMC Press, Inc, c1979. - 193p. : illus. ; 21 cm.