Publication
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Over de approximatiestelling van weierstrass Tech Report
January 1963 -
Topological semigroups, 2 Tech Report
January 1963 -
On the invariants of finite abelian groups Tech Report
January 1963 -
January 1963 -
Autohomeomorphism groups of 0-dimensional spaces : (compositio mathematica, _1_5(1963), p 203-209) Tech Report
January 1963
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January 1963 -
Compingent lattices and algebras Tech Report
January 1963 -
A case of colouration in the four colour problem Tech Report
January 1963