О санитарном состоянии водоемов Эстонской ССР : (по данным за 1967-1972 гг.)
Technical data
URL: http://www.digar.ee/id/nlib-digar:913210
ViewAvailable at the authorised workplace in the National Library of Estonia, Archival Library of the Estonian Literary Museum, Tallinn University of Technology Library, University of Tartu Library and Academic Library of Tallinn University
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Access restricted in public network
URL: http://www.digar.ee/id/nlib-digar:913210
