Rigardante Malantaŭen: Malsamoj inter versioj

*{{en}} [http://www.americanmusicpreservation.com/TheMusicalTelephone.htm Play: ''The Musical Telephone'' based on Bellamy's Looking Backward]

* [https://search.onb.ac.at/primo_library/libweb/action/search.do?fn=search&ct=search&initialSearch=true&mode=Basic&tab=default_tab&indx=1&dum=true&srt=rank&vid=ONB_MOBILE&frbg=&vl%28freeText0%29=Rigardante+malantauen&scp.scps=scope%3A%28ONB%29&vl%28474847436UI1%29=all_items&vl%281UI0%29=contains&vl%28D474847260UI0%29=any&vl%28D474847260UI0%29=title&vl%28D474847260UI0%29=any Katalogo de] [[Esperantomuzeo kaj Kolekto por Planlingvoj]]

 

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