bakteri

http://www.e-dukasi.net/mol/mo_full.php?moid=86&fname=kb1_5.htm

http://74.125.153.132/search?q=cache:8YRlAy8Ni7IJ:www.warmasif.co.id/kesehatanonline/mod.php%3Fmod%3Ddownload%26op%3Dvisit%26lid%3D939+bakteri+anaerob&cd=2&hl=id&ct=clnk&gl=id

http://ftp.ui.edu/bebas/v12/sponsor/Sponsor-Pendamping/Praweda/Biologi/0009%20Bio%201-2b1.htm