Kit with components made of severably joined identical units
作者： Walter Holzer
DOI:
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摘要:
lens.org 参考文章(4)
Christiansen Godtfred Kirk, Toy building sets and building blocks ,(1959)
Sigvard Bernadotte, Acton Bjphirn, Building block having flexible ribs to engage a similar block ,(1961)
Oscar P. Erhardt, Constructional toy building elements ,(1948)
Thomas R Korchak, Splitting severable construction stick ,(1958)