End Of A Search: Herman Agler (left), father of Barbara Agler, 20-year-old University coed who was found last night in a Washington, D.C. rooming house, hands a cigaret to Detective Sgt. Claude Damron of the Ann Arbor Police Department minutes after word had been received that the girl had been located. Raymond M. Shirven, right, 19-year-old University student who had undergone extensive questioning and lie-detector tests in the investigation, watches with relief. The girl returned to her Susquehana, Pa. home today.