Nations Unies : comission économique pour l'Europe : senior advisers to ECE governements on environmental problems in cooperation with the united nations environment programme UNEP/ECE regional seminar on alternative patterns of development and lifestyles : Ljubljana /Yugoslavia/, 3-8 December 1979. Genéve : Nations Unies, 1979. Prer. s. [Počet ex. : 1, z toho voľných 1, prezenčne 0]