. . . "yellow-dog contract"@en-us . "0"^^ . "106527170"^^ . "106124379"@en-us . . . . . "a labor contract (now illegal) whereby the employee agrees not to join a trade union"@en-us . "0.375"^^ . "104900323"@en-us . . . . "yellow-dog contract"^^ . . . "06527170-n"^^ . . . .