Return to Article Details FREEQUENCY OF F S SP PO ON NT TA AN NE EO OU US S B BA AC CT TE ER RI IA AL L P PE ER RI IT TO ON NI IT TI IS S ( (S SB BP P) ) I IN N C CI IR RR RH HO OT TI IC C P PA AT TI IE EN NT TS S W WI IT TH H A AS SC CI IT TE ES S D Download Download PDF