00277nam a2200109 a 4500008004100000050001400041100001800055245003900073260003200112300001400144350000900158120416s1978    ||||||||||||||||| ||    u  aQR 71 Tre  aTrotman, R. E10aTechnological aids to microbiology  aLondonbEdward Arnoldc1978  aiii, 89p.  a0.00