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574 Roth, Rene R. Instructor's manual to accompany Purves, Orians and Heller - Life: the science of biology / prepared by Rene Roth and Norman Huner. - 3rd ed.. - Sunderland, MA : Sinauer Assoc., 1992. 194 p. 0716722798 9780716722793 * Purves, William K., 1934- Orians, Gordon H. * Biology - Handbooks, manuals, etc. * Huner, Norman.Heller, H. Craig. * Title