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Astronauts landing on Venus encounter dangerous creatures and almost meet sexy Venusian women. The astronauts kill a creature that is worshiped by the Venusian women who then attempt to use their powers of nature to kill the astronauts but fail. At last, the astronauts leave the planet and their robot that was burnt by the volcano fire is placed as a god by the Venusian women who have already destroyed the statue of their previous god (a bird). This work is in the  public domain  because it was published in the United States between 1926 and 1963 and although there may or may not have been a copyright notice, the  copyright was not renewed . For further explanation, see  Commons:Hirtle chart . Note that it may still be copyrighted in jurisdictions that do not apply the  rule of the shorter term  for US works (depending on the date of the author's death), such as Canada (50 years  p.m.a. ), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germa...

An expedition to a plateau in the Amazon basin of South America where prehistoric animals still survive. This work is in the  public domain  because it was published in the United States between 1926 and 1963 and although there may or may not have been a copyright notice, the  copyright was not renewed . For further explanation, see  Commons:Hirtle chart . Note that it may still be copyrighted in jurisdictions that do not apply the  rule of the shorter term  for US works (depending on the date of the author's death), such as Canada (50 years  p.m.a. ), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.