Links

Links []  []  []  http://www.ucmp.berkeley.edu/history/leeuwenhoek.html  http://www.greatscientists.net/anton-van-leeuwenhoek/  http://www.cartage.org.lb/en/themes/sciences/physics/optics/OpticalInstruments/Microscope/Leeuwenhoeks/Leeuwenhoeks.htm