Electronic Resource
[s.l.]
:
Nature Publishing Group
Nature
360 (1992), S. 406-406
ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] SIR - During the Cold War, the com-munist regimes of East Europe sought to restrict freedom of travel for all their citizens, even those whom they allowed to travel abroad for science or business reasons. Thus in Poland scientists and businessmen were issued with special passes called service ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/360406b0
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