International long-range planning: Some basic considerations

von Welt, Leo G. B.
Veröffentlicht in Sethi, S.Prakash Multinational business operations ; 2: Long-range planning, organization, and management (1973)

Pipeline to profit

von Welt, Leo G. B.
Veröffentlicht in Public utilities fortnightly (1971)

The management of Canadian urban government : a basic text for a course in urban management

von Plunkett, T. J.
Veröffentlicht 1979