Walking in the footsteps of van Leeuwenhoek (part 1).

Seifert, K.A. (2013). "Walking in the footsteps of van Leeuwenhoek (part 1).", published in the microbe.net site (guest posts). http://microbe.net/2013/05/01/guest-post-from-keith-seifert-walking-in-the-footsteps-of-van-leeuwenhoek-part-1/.