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by Hubbard, David Allan
by Nolland, John; Hubbard, David A.
by Hubbard, David
by David W. J. Gill; Moyer V. Hubbard
by Lasor, William Sanford; Hubbard, David Allan; Bush, Frederic Wm
by Hubbard, David Allen; Barker, Glenn W.; Watts, John D. W.; et al.
by Hobbs, T. R.; Hubbard, David A.
by Hubbard, David A.
by Butler, Trent C.; Hubbard, David A.