International Society for Photogrammetry Congress, Lofstrom, K. G., Savolainen, A., & Kilpela, E. (1976). International archives of photogrammetry = Archives internationales de photogrammetrie = Internationales archiv fur photogrammetrie: Proceedings = actes = ergebnisse, volume=band XXI. Committee of the XIII International Congress for Photogrammetry.
Tohutoru Kātū ChicagoInternational Society for Photogrammetry Congress, K. G. Lofstrom, Aino Savolainen, me Einari Kilpela. International Archives of Photogrammetry = Archives Internationales De Photogrammetrie = Internationales Archiv Fur Photogrammetrie: Proceedings = Actes = Ergebnisse, Volume=band XXI. [Helsinki]: Committee of the XIII International Congress for Photogrammetry, 1976.
Tohutoro MLAInternational Society for Photogrammetry Congress, et al. International Archives of Photogrammetry = Archives Internationales De Photogrammetrie = Internationales Archiv Fur Photogrammetrie: Proceedings = Actes = Ergebnisse, Volume=band XXI. Committee of the XIII International Congress for Photogrammetry, 1976.