National Geographic : 1944 Nov
00 Ruth Allen A Graceful Bridge on Lake Lanao's Shore Attests Moro Engineers' Skill withBamboo and Rope Moro custom says strangers should not look upon their women. When outsiders pass, therefore, the women peep atthem through the split-bamboo walls ofthe houses. Through cracks in bamboo floors, crumbs fall to poultry on the ground. Moros, following the Koran, keep nopigs.