From Times Staff and Wire Reports Copyright 2006 Los Angeles Times April 4, 2007 John Billings, who developed a natural contraception method that won support among Catholics, has died in Melbourne, Australia, a colleague said Tuesday. He was 89. Billings died late Sunday at a Melbourne retirement home, said Marian Corkill, director of the World Organization of the Ovulation Method Billings International, better known as WOOMB. A cause of death was not given. Billings served as a doctor for the Australian Imperial Force in New Guinea during World War II before returning to Melbourne.