[Committee publication] serial, 93d Congress. 47. Merchant marine miscellaneous, hearings before Subcommittee on Merchant Marine, 93d Congress, 2d session, on H.R.13561 and H.R.13615, H.R.17048, H.R.17146, and H.R.17296, pt. 3, July 10 and Nov. 21, 1974.