Playing cards with superimposable transparent and indicia-bearing areas

,2005, 引用: 4

,2003, 引用: 7

,1990, 引用: 21

,1987, 引用: 9

,1965, 引用: 9

,2004, 引用: 3

,1968, 引用: 12

,1996, 引用: 66

,2011, 引用: 5

,2012, 引用: 3