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by Sumner B. Twiss
by Twiss, Sumner B.; Simion, Marian G.; Petersen, Rodney L.
by Twiss, Sumner B.; Grelle, Bruce
by Hargreaves, Alec; Kelsay, John; Twiss, Sumner B.; et al.
by Bird, Frederick; Twiss, Sumner B.; Pedersen, Kusumita; et al.
by Conser, Walter H.; Twiss, Sumner B.
by Kelsay, John; Twiss, Sumner B.