Society for Underwater Technology (SUT)
Manchester. Health Department.
Faridun Junaydi
A. Siegel
Heinrik Rehr
Swami Vivekananda
Lisa A. Kelly
D.A. Lerner
James Le Sueur
Anne Holmes Filson
Jonathan Emmett
Alan B. Knox
Kaplan
Lloyd Dingle
Arswendo Atmowiloto
NCCER