Commerce reports. Supplement to Commerce reports, no. 10a, 11a, 13a, 15c, 21a, 25a, 42a, 52c-e, 65b, 66a. 52e. China: Amoy, by Clarence E. Gauss; [Chefoo, by Lester Maynard; Foochow, by Albert W. Pontius; Nanking, by J. Paul Jameson].