The visit of the Newcomen society for the study of the history of engineering and technology to the Netherlands, May 7th to May 10th 1949 and the Joint meeting of the Newcomen society and the Genootschap voor geschiedenis der geneeskunde, wiskunde en natuurwetenschappen (Society for the history of medicine, mathematics and science), May 7th and 8th 1949, at Leiden / D. Burger.
Archives internationales d'histoire des sciences No 10 (1950), p. 158-165