"300022398" . . . "knocking-down irons"@en . "1988-01-01T00:00:00"^^ . "irons, knocking-down"@en . "Heavy metal blocks used for ensuring that all parts of the book align correctly. The grip of the iron can be clamped into a press so that the edges of the book can be knocked firmly against the flat surface."@en . "knocking-down iron"@en . . "iron, knocking-down"@en . "2001-07-26T22:04:39"^^ .