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JARABAK, Joseph R. Management of an Orthodontic Practice; C. V. Mosby, St Louis, 1965 (p, 24-64).
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ORMCO CORPORATION, 1332 South Lone Hill Road, Slenora, California. U.S.A.
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ROCKY MOUNTAIN DENTAL PRODUCTS, P.O. Box 1887, Denver, Colorado 80201, U.S.A.
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UNITEK CORPORATION, 950 Royal Oaks Drive, Monrovia, California 91016, U.S.A.
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