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O. Y. Drbal

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Articles published in Academic Journals of Lviv Polytechnic Publishing House

A. D. Motorny - a teacher, a scientist, a man.
Volume 55, 1993
Prominent Polish geodesist Caspar Weigel (1880-1941).
Volume 55, 1993
Dominique Zbrozhek (1832-1889)
Volume 55, 1993