ປົກຫຼັງ

ທີ່​ມາ​ຮູບ​ພາບ:

ໜ້າ 5 Butterfly: ©Ron Austing, Photo Researchers;

ໜ້າ 9 Masked medicine man: ©T. D. Friedman, Photo Researchers;

ໜ້າ 9 Soldiers with cannon: ©Art Stein, Photo Researchers;

ໜ້າ 24 Fetus: ©Petit Format/Nestle/Photo Researchers