00353pam a2200133 a 4500020001700000041000800017082001300025100001700038245008200055260003100137300000900168653002500177700001700202  a0471913960c  aeng  a543bHAW  aHawcroft, D.  aClinical Specimens : Analytical Chemistry By Open LearninghTextual Documents  aWeinheimbJohn Wileyc1987  a130.  aAnalytical Chemistry  aHector, T H.