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by Siegel, Larry J.; Bartollas, Clemens
by Siegel, Larry; Bartollas, Clemens
by Bartollas, Clemens; Miller, Stuart J., Ph.D.
by Braswell, Michael; Bartollas, Clemens; Helms, John Michael
by Bartollas, Clemens
by Bartollas, Clemens; Milovanovic, Dragan
by Larry J. Siegel; Clemens Bartollas