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Books about Helfenbein:
Helfenbein (Robert) v. International Industries, Inc. U.S. Supreme Court Transcript of Record with Supporting... by SHERIDAN MORGAN and THOMAS J WHEATLEY (Oct 30, 2011)
Thou must leave Thy lowly Dwelling. For chorus of male voices ... Arranged by Ladislas Helfenbein by Louis Hector Berlioz (1955)