File:Bartel BM-4, scheda Aerei da Guerra.jpg

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Italiano: Bartel BM-4, aereo da addestramento biposto, monomotore biplano, progettista Ryszard Bartel, produttori Wielkopolska Wytwórnia Samolotów Samolot e Podlaska Wytwórnia Samolotów (PWS). Data e luogo della foto sconosciuti ma presumibilmente scattata in Polonia.
Date
Source Scheda Aerei da guerra, Ginevra - Novara, Edito Service S.A. - Istituto Geografico De Agostini, 1993
Author Unknown authorUnknown author

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Public domain
This photograph is in the public domain because according to the Art. 3 of copyright law of March 29, 1926 of the Republic of Poland and Art. 2 of copyright law of July 10, 1952 of the People's Republic of Poland, all photographs by Polish photographers (or published for the first time in Poland or simultaneously in Poland and abroad) published without a clear copyright notice before the law was changed on May 23, 1994 are assumed to be in the public domain in Poland.

This work is in the public domain in the United States because it meets three requirements:

  1. it was first published outside the United States (and not published in the U.S. within 30 days),
  2. it was first published before 1 March 1989 without copyright notice or before 1964 without copyright renewal or before the source country established copyright relations with the United States,
  3. it was in the public domain in its home country (Poland) on the URAA date (1 January 1996).
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Date/TimeThumbnailDimensionsUserComment
current13:28, 2 June 2020Thumbnail for version as of 13:28, 2 June 20201,586 × 1,130 (902 KB)M0tty (talk | contribs)Removing regular noise using FFT
07:19, 15 November 2016Thumbnail for version as of 07:19, 15 November 20161,586 × 1,130 (303 KB)Threecharlie (talk | contribs)User created page with UploadWizard

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