A relief official offered an "educated guess" of at least 3.000 civilians killed in 3 weeks in Marchbut. he allowed. it could have been 10.000. As the Communist rebels have moved closer to Phnom Penh. so too have the B52s. whose bomb explosions can be heard in the city all night. night after night. A young Cambodian woman in a refugee camp said that more than half of the 1.200 people in her village 25 miles from Phnom Penthas well as about 50 Communist guerrillashad been killed in a B52 raid a few days before. Another young woman told a reporter of nights of hiding in a deep bunker in a village 18 miles east of Phnom Penh. she said. When everything seemed to explode inside me and when the noise was so loud that I couldnt hear if I was screaming or not.