^
ab"Glöckel Otto". Weblexikon der Weiner Sozialedemokratie.
SPÖ. Archived from
the original on 28 March 2016. Retrieved 16 October 2015.
^Stadler, Friedrich (2011). "Written Language and Picture Language after Otto Neurath—Popularising or Humanising Knowledge?". In Heinrich, Richard; Nemeth, Elisabeth; Pichler, Wolfram; et al. (eds.). Image and Imaging in Philosophy, Science and the Arts. Frankfurt: ontos Verlag. p. 8.
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