00411    a2200145   4500020001400000082001300014100002100027245004900048260005800097300002000155650002600175700002100201700002000222700002300242  a067570260  a570bHUM  aHummer, Paul J.   aProbing levels of lifeba laboratory manual   aOhiobCharles E. Meril Publishing Companyc1983g1983  avii,232p.c27cm  alife sciences biology  aOram, Raymond F.  aKaskel, Albert   aKennedy, James E.