00329nam a22001097a 4500003000400000082001800004100001700022245011300039260002600152300000700178650003400185SGT  a617.522bE24S  aSingla, Isha  aEvaluation of Sinus floor augmentation using platelet - rich fibrin (PRF) vs bone graftbA comparative study  bSGT University c2024  a85  aOral & Maxillofacial Surgery