By Helpin Mark L.   Rosenberg Howard M.   Sayany Zuhair   Sanford Robert A.   in Journal of Dentistry for Children

ISSN:1935-5068|65|4|244-247

American Academy of Pediatric Dentistry‎(1998)‎

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By Croll Theodore P.   Helpin Mark L.   Donly Kevin J.   in Journal of Dentistry for Children

ISSN:1935-5068|67|6|391-398

American Academy of Pediatric Dentistry‎(2000)‎

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