1. Experimental design in psychological research;Edwards,1950
2. Third molars;Hoek;JADA,1964
3. Removal of third molars as a phase of preventive dentistry;Costich;Dent Abstracts,1968
4. Evaluation of the third molar problem;Laskin;JADA,1971
5. Indications and contraindications for removal of impacted third molars;Laskin;Dent Clin N Am,1969