Crossword Clue:

ONCOLOGIST one who studies oncology

AnswerCrossword Clue
PALEONTOLOGISTOne who studies fossils
OCULISTOne who studies irises
MYRMECOLOGISTOne who studies ants
CPAOne who studies books
MICROBIOLOGISTOne who studies minute organisms
ROENTGENOLOGISTOne who studies X-rays
YOGIOne who studies asanas and pranayama