Richard Friedrich Johannes Pfeiffer (Indonesian Wikipedia)
Analysis of information sources in references of the Wikipedia article "Richard Friedrich Johannes Pfeiffer" in Indonesian language version.
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doi.org
- Fildes, P. (1956). "Richard Friedrich Johannes Pfeiffer 1858-1945". Biographical Memoirs of Fellows of the Royal Society. 2: 237–247. doi:10.1098/rsbm.1956.0016
. JSTOR 769487.
jstor.org
- Fildes, P. (1956). "Richard Friedrich Johannes Pfeiffer 1858-1945". Biographical Memoirs of Fellows of the Royal Society. 2: 237–247. doi:10.1098/rsbm.1956.0016 . JSTOR 769487.