▁engine , ▁the ▁ 1 4 - cy l inder ▁R . A . F . ▁ 8 . ▁ ▁References ▁ ▁S ources ▁ ▁Bruce , ▁J . M . ▁British ▁Aer op lan es ▁ 1 9 1 4 - 1 8 . ▁London : Put nam , ▁ 1 9 5 7 . ▁H are , ▁Paul ▁R . ▁The ▁Royal ▁A ircraft ▁Factory . ▁London : Put nam , ▁ 1 9 9 0 . ▁. ▁Lewis , ▁Peter . ▁The ▁British ▁F ighter ▁since ▁ 1 9 1 2 . ▁London : Put nam , ▁Four th ▁edition , ▁ 1 9 7 9 . ▁. ▁Mason , ▁Francis ▁K . ▁The ▁British ▁F ighter ▁since ▁ 1 9 1 2 . ▁Ann apolis , ▁USA : N aval ▁Institute ▁Press , ▁ 1 9 9 2 . ▁. ▁ ▁Category : 1 9 1 0 s ▁British ▁f ighter ▁aircraft ▁SE 0 6 <0x0A> </s> ▁Moh amed ▁Ser ir ▁( ; ▁born ▁December ▁ 6 , ▁ 1 9 8 4 ▁in ▁Al gi ers ) ▁is ▁an ▁amateur ▁Al ger ian ▁Gre co - R oman ▁wrest ler , ▁who ▁played ▁for ▁the ▁men ' s ▁wel ter weight ▁category . ▁He ▁won ▁two ▁med als ▁( g old ▁and ▁silver ) ▁for ▁his ▁division ▁at ▁the ▁African ▁Wrestling ▁Championships ▁( 2 0 0 8 ▁in ▁Tun is , ▁Tun is ia , ▁and ▁ 2 0 0 9 ▁in ▁Cas ab lan ca , ▁Mor