Alvin users manual. Woods Hole, Mass.: Woods Hole Oceanographic Institution, 1976, p. 36.
, Briefs of Alvin history from June 1964 to the present. Woods Hole, Mass.: Woods Hole Oceanographic Institution, 1984, p. 6.
, Criteria for the selection, training and qualification of pilots for the deep submergence engineering and operations section. Woods Hole, Mass.: Woods Hole Oceanographic Institution, 1968, p. 18.
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