YANGON, Myanmar -- Myanmar's military government has finally agreed to let a U.S. military cargo plane bring in food and other relief supplies to the cyclone-ravaged country.

However, relief workers, including Americans, are still being barred entry to Myanmar. The military rulers of the Southeast Asian nation have been insisting on full control of relief operations, which have been delayed for nearly a week.

Myanmar's military regime distributed international aid Saturday but plastered the boxes with the names of top generals in an apparent effort to turn the relief effort into a propaganda exercise.

The United Nations sent in three more planes and several trucks loaded with aid, though the junta took over its first two shipments.

State-run television continuously ran images of top generals -- including the junta leader, Senior Gen. Than Shwe -- handing out boxes of aid to survivors at elaborate ceremonies.

The U.N. agreed to send additional relief flights after briefly suspending its operations Friday.

The government has only a few dozen helicopters and 15 transport planes of its own to use in the relief effort.

State media say 23,335 people died and 37,019 are missing from Cyclone Nargis, which submerged entire villages in the Irrawaddy delta. International aid organizations say the death toll could climb to more than 100,000 as conditions worsen.

The plight of nearly two million survivors is expected to get worse over the next several days with heavy rain in the forecast. An emergency coordinator with the International Rescue Committee said in some villages nearly all the homes were destroyed and survivors have virtually no clean water. He said the potential for an even more massive health disaster grows with each passing day.

The U.N. is seeking $187 million to help the storm survivors over the next three months.

Several countries, including the U.S., are calling on Myanmar to ensure unfettered access for aid workers, release aid shipments, speedily grant visas and waive importation fees.

Meanwhile, witnesses said a proposed military-backed constitution appears to have won overwhelming approval in a referendum in which there was visible intimidation of voters.

The witnesses and local officials who watched the counting of ballots say the vote appeared to be 80 percent to 90 percent in favor of the draft charter. The ruling junta's critics consider the proposed constitution unfair and undemocratic.

Witnesses said they saw cases of intimidation of voters at various polling stations around the country, including orders to affix fingerprints to ballot papers.

The results of the referendum are unlikely to be announced until after late voting on May 24 in areas badly hit by Cyclone Nargis, including the country's biggest city, Yangon.

The disaster has overshadowed the vote, which even before the May 3 storm was considered by many a foregone conclusion with the rules skewed in favor of the military junta that has ruled since 1962.