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R.P. Bulgaria : dezvoltare economica ; sinteza de date comentate
1973
Persistent link: https://www.econbiz.de/10003232598
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R.P. Ungară
1977
Persistent link: https://www.econbiz.de/10003232610
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R. D. Germană
1976
Persistent link: https://www.econbiz.de/10003233384
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Bazele informaticii documentare
19XX
Persistent link: https://www.econbiz.de/10003084534
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Elaborarea, inmagazinarea şi difuzarea documentelor (2)
1977
Persistent link: https://www.econbiz.de/10003084539
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Cercetarea ştiinţifică şi dezvoltarea tehnologică în diferite ţări
1977
Persistent link: https://www.econbiz.de/10003087716
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Cauciuc şi materiale plastice
1977
Persistent link: https://www.econbiz.de/10003102172
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Creativitatea şi mijloacele de stimulare a spiritului creator
1976
Persistent link: https://www.econbiz.de/10003111677
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Economie mondială
1977
Persistent link: https://www.econbiz.de/10003116363
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Ecuador
1977
Persistent link: https://www.econbiz.de/10003117821