PROVINCE IS LOST
May 2: South Vietnamese abandon Quangtri city on May 1, giving advancing N Vietnamese troops biggest prize to date in 1-mo-long invasion; city, 1st prov capital to be lost since N Vietnamese offensive began on Mar 30, fell after 3 days of shelling during which N Vietnamese moved troops and tanks to its edge; city's fall gives N Vietnamese control of all of Quangtri Prov; some 80 US advisers, comdr of S Vietnamese forces and his staff are evacuated from city; illus of US advisers waiting to be evacuated; US B-52's reptdly bombed as close as 1-mi from city in attempt to repulse enemy and cover retreat of S Vietnamese forces; S Vietnamese forces, accompanied by 10 US advisers, retreat south towards Hue, strategic city swollen by some 300,000 refugees; Quangtri reptdly was abandoned without much fight by Govt troops; sr US adviser in northern region, Brig Gen T W Bowen, comments; infiltrators from North reptdly are trying to organize in Hue and 1 key leader, Le Van Hao, reptdly has been picked up at checkpoints estab by mil police