I wish to thank oaeh aeaber of ay ooaalttee for tholr help In
preparing thla aanuaortpt. Or* Donald Donua, or. Charlas Lareen,
Dr* Keaaeth Sandro Id, and Dr* Neman Wllaon a ll bar* eoatrlbutad
Invaluable eonatructlvo o r ltlo la a , naklng the writing of th la d is
sertation an extraaely valuable learning experience. To Dr. W* P.
Evans gaas apaolal appreciation for hia vary careful reading o f the
aaausorlpt and hla u nselfish dedloatlen te the task e f teaching ae
■any special things about system atic research.
My sincere gratitude la also given to a ll e f the International
Students studying at Oklahaaui State University who participated In
th is research e ffe r t.
Te ay ty p ist. Cynthia SJobarg, I extend ay vara appreciative far
a Job extreaely v e il done.
Mere vords cannot express ay vhelehearted gratitude and appre
ciation te ay wife and children who have given to ae unvavezing
support for three years e f graduate study.
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