69805
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50 lat urzędu patentowego w Polsce / [aut. Jan Dalewski et al. ; przedm. Eugeniusz Szyr. - Warszawa : [s.n.], 1969 (Wrocław : Wrocławska Drukarnia Dziełowa). - 253, [3] s. : il., err. ; 21 cm.
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Czytelnia WP
Copies are only available in the library: sygn. 026567 Tc (1 egz.)
Notes:
Bibliography, etc. note
Bibliogr. s. 251-[254].
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