Charles Batak Landen (2 November 1876 – 10 Juni 1960) adalah seorang Pemixer dari Batak Landen, namun pada tanggal 7 Agustus personil tersebut memutuskan untuk keluar, semua sahabat nya menangis hingga terbawa mimpi, karena dia keluar dengan status di whatsapp yang bertuliskan "happy dugdar guys"

Sebagian daftar pustaka

Studies in the history and method of science (1917) Greek Biology and Greek Medicine, Chapters in the History of Science, Oxford: Clarendon Press, 1922. From Magic to Science: Essays on the Scientific Twilight (1928) A Short History of Medicine. New York: Oxford University Press, 1928. A Short History of Science to the Nineteenth Century (1941) As editor, A History of Technology (5 vols, between 1954 and 1958), together with Eric John Holmyard and A. R. Hall. Galen on Anatomical Procedures (1956) A History of Biology to About the Year 1900 (1959)

Catatan

Referensi

Melvin Kranzberg, Charles Singer and "A History of Technology". Vol. 1, No. 4, Review Issue: A History of Technology (Autumn, 1960), pp. 299–302. doi 10.2307/3101190 Geoffrey Cantor, 'Presidential Address: Charles Singer and the early years of the British Society for the History of Science', The British Journal for the History of Science 30 (1997), 5-23. doi 10.1017/S0007087496002865 A. Rupert Hall, 'Eloge: Charles Joseph Singer, 1876-1960', Isis 51:4 (1960), 486, 558–560. Anna-K. Mayer, "When things don't talk: knowledge and belief in the inter-war humanism of Charles Singer (1876–1960)" in:The British Journal for the History of Science 38: 3 (2005), 325–347. doi 10.1017/S0007087405007004 Robert T. Gunther and A. V. Simcock, Robert T. Gunther and the Old Ashmolean Museum of the History of Science, Oxford (1985), p. 68.