CAMBODIAN GUERRILLAS MAKE GAINS

Several thousand Khmer Rouge and Western-backed guerrillas yesterday overran Cambodian government positions controlling a highway and railway leading to Thailand, Thai officials said. Diplomats said the targets were government garrisons at the border town of Poipet and artillery positions at Nimit, Svay Chek, and several other small towns.

Thai officials in Ban Aranyaprathet said the guerrillas had control of 12 miles of Route 5 and the railway leading from the Thai border.