Choice and chance, two chapters of arithmetic, with an appendix containing the algebraical treatment of permutations and combinations newly set forth.

Mode of access: Internet.

A study of data manipulation algorithms in magnetic bubble memories /

Thesis--Illinois.

Choice and chance with 1000 exercises,

Mode of access: Internet.

Lehrbegriff der syntactik, oder combinationslehre.

"Literatur der Syntactik": p. [529]-541.

Choice and chance, with 1000 exercises.

Mode of access: Internet.

Sammlung combinatorisch-analytischer abhandlungen /

Mode of access: Internet.