http://es.wikipedia.org/wiki/Hernando_Col%C3%B3n
Conrad von Gesner
http://es.wikipedia.org/wiki/Conrad_von_Gesner
Pharmazeutisches Zentralblatt (1830)
http://en.wikipedia.org/wiki/Chemisches_Zentralblatt
Quarterly Journal of Chemical Society (1847)
http://es.wikipedia.org/wiki/Journal_of_the_Chemical_Society
Catalogue of Scientific Papers (Royal Society, 1867)
http://en.wikipedia.org/wiki/International_Catalogue_of_Scientific_Papers
International Catalogue of Scientific Literature (1902)
http://en.wikipedia.org/wiki/International_Catalogue_of_Scientific_Literature
