. . "Excess profits tax procedure, 1921 : including federal capital stock (excise) tax" . . "Excess profits tax procedure, 1921" . "Excess profits tax procedure 1921 : including federal capital stock (excise) tax"@en . . . "Excess profits tax procedure, 1921 including federal capital stock (excise) tax"@en . "Excess profits tax procedure 1921 including federal capital stock (excise) tax"@en . . . . . . . . . . . . . . . "Excess profits tax United States." . . . .