<prompt> Four film survey series for children consists of maxillary and mandibular occlusals along with:Two maxillary posterior periapicalsTwo mandibular posterior periapicalsTwo posterior bitewingsOne panoramic and one lateral jaw views  <response>: 4 film survey requires 2 anterior occlusal and 2 bitewing radiographs.8 film survey requires 4 posterior, 2 anterior occlusal and 2 bitewing radiographs.12 film survey requires 4 IOPAs for posterior teeth, 4 canine IOPAs, 2 incisor IOPAs and 2 bitewing radiographs.16 film survey requires 4 permanent molar radiographs additional to the 12 film survey.Ref: Principles and practice of Pedodontics by Arathi Rao 