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Show ACKNOWLEDGME;NTS Without iduals this the study would I Foremost As my eployer, seven he also years, for not my to provided the stimulus in guiding the the of Many study. financed for which he some for various under his Ephemeroptera study he.has tions to provide necessary help is committee. To-Dr. friendship, and for tions, and for his biogeographical Without University of Lewis T. were His Many career. my by him, aid to prepared this and higher classification In al,l beyond and his aspects academic of of this obliga guidance. Nielsen for collections untiring aid valuable records in the in this constant help Idaho, of guidance Harper for his information the but expressed to the other members of my Kimball T. To Dr. used the well past study, collected direction. extended himself Gratitude Idaho. on through special trips illustrations studies this Ephemeroptera. were made Jr. helpful suggestions have me cif the specimens recorded herein including the and the friend for diecting advice, in possible. personal only indiv George F. Edmunds, Dr. for interest constant been have and teacher, was fostering encouragement, not grateful am of many aid and generous untiring of iii of many and personal specimens from interest and sugges presentation of thesis. Dr. of William F. the Barr, species, including |