Johann Wilhelm Helfer (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Johann Wilhelm Helfer" in English language version.

refsWebsite
Global rank English rank
6th place
6th place
low place
low place

archive.org

  • Low, C R (1877). History of the Indian Navy, 1613-1863. Volume 2. London: Richard Bentley and Son. p. 36.
  • Sturge, George, ed. (1878). Travels of Doctor and Madame Helfer in Syria, Mesopotamia, Burmah and other lands. Volume 2. London: Richard Bentley & Son. p. 248.

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