00415    a2200121   4500082001300000100002200013245009200035260004300127300002200170440006100192650002800253650001200281  a579bCOO  aCoomaraswamy, Uma  a Environmental and applied microbiology laboratory manualbfor limited circulation only  aSri LankabOpen Universityc1998g1998  axviii,142p.c28cm  aFaculty of natural sciences bachelor of science: level 5  aGenetics and evolutions  aBiology