Johnson, Catherine W. Essential laboratory Mathematics : concepts and applications for the chemical and clinical laboratory technician / Catherine W. Johnson, Daniel L. Timmons, Pamela E. Hall. - Clifton Park, NY : Delmar Learning, 2003. - xi, 268 p.: 27 cm. includes index Subjects--Topical Terms: Essential laboratory --mathematics LC Class. No.: RB38.3 / JOH 2003