350 of Enemy Killed► •in Big Delta OperationSAIGON (AP) - U.S. andSouth Vietnamese forces have killed 350 Viet Cong in the largest allied assault of the war in the Mekong Delta, field commanders in the operation reported today.The U.S. Command in Saigon announced the massive groundand riyer operation by an estimated 10,000 troops was launched last Friday to clear out Viet Cong whose mining of the main highway from the delta has, raised food prices in Saigon. The announcement of the operation was withheld for five days for security reasons.The U.S. Command said ithad reports of 200 Viet Cong killed and that U.S. casualties were 16 dead and 59 wounded. Unofficial reports from the field said 28 South Vietnamese troops had been killed and 50 wounded.Elsewhere in South Vietnam, only light ground action was reported.Weather ClearsThe air war in North Vietnam jumped back to normal scale Monday as the weather cleared and Navy fliers resumed full operations after the disruption caused by the fire aboard the carrier Forrestal.U. S. fliers flew a total of 136 missions, 46 more than the 90 flown Sunday. Many of their targets were in the Hanoi-Hai-phong area which had been protected by bad weather in recent weeks.Two more American warplanes were lost, raising to 627 the number of U.S. combat planes reported lost over North Vietnam, Three crewmen were listed as missing. .Two U.S. Army helicoptersHAVE YOU WRITTEN A BOOK?The executive director of a well-known New York publishing firm will be In Janesville in mid-August. He will be interviewing local authors in a quest for finished manuscripts suitable for book publication. All subjects will be considered, including fiction and non-fiction, poetry, juveniles, religious books, etc.If you have completed a book-Jenglh manuscript (or nearly so) on any subject, and would like a professional appraisal (without cost or obligation), please write immediately describing your work and stating which part of the day (a.m. or p.m.) you would prefer for an appointment. You will promptly receive a confirmation for a definite time and place.Authors with completed manuscripts unable to appear may send them directly to us for a free reading and evaluation. We will also he glad to hear from those whose literary works are still in progress. Please address.Mr. Thomas HungerfordCARLTON PRESS, INC.84 Fifth Avenue, New York, N. Y. 10011Phone 212-243-8800also were destroyed in a collision which killed eight men near the coastal city of Tuy Hoa, 250 miles northeast of Saigon.Troops of the U.S. 9th and25th Infantry divisions, SouthVietnamese rangers and Marines and a U.S. Navy task force were taking part in the big delta sweep centered about 14 miles west of My Tho, one'of the largest cities in the rich rice * producing area.Hoad MinedLt, Gen. Fred C. Weyand, commander of Field Force II, said the force is trying to root out Viet Cong who have been mining Highway 4, the main road over which rice and other farm products move to Saigon.In the past 10 days, Weyand said, the Viet Cong cut the road eight times, raising food prices in Saigon.On the demilitarized zone ! front, Communist gunners poured 40 rounds of mortar fire on a battalion command post of the 9th Marine Regiment just below the zone and wounded nine Marines.Pilots from the carrier Intrepid, which replaced the fire-ravaged Forrestal in the Gulf of Tonkin, reported destroying a boat yard near the city of Vinh, in the lower part of North Vietnam.B52 bombers struck twice today at main Communist infiltration routes in the northwest comer of South Vietnam within sight of the Laotian Border. The two raids came in the wake of a B52 strike Monday against the nearby A Shau Valley which has been under heavy air attack.