OKLAHOMA CLEANING UP AFTER WEEK OF FLOODS, RAINS Residents of central Oklahoma returned to their homes over the weekend after a week of heavy rains and severe flooding that left two dead and caused more than 20 mln dlrs in damage, officials said. Some 900 people were evacuated from their homes during the rains and flooding last week, civil defense officials said. Many of the shelters set up throughout the state in areas threatened by flooding, except those near the Washita and Red Rivers, closed as residents returned to their damaged homes. Farmers who had expected a near-record wheat crop now say this year will see one of the largest losses in decades. Gov. Henry Bellmon, who on Thursday declared a flooding emergency for central Oklahoma, was expected to ask President Reagan for federal disaster relief for the area. In northern Texas, officials reported several tornadoes on Friday. A twister in Lubbock yesterday damaged six mobile homes and two houses. No injuries were reported.