- Author: C.J. van LEEUWEN T.G. VERMEIRE
- Language: English
- Author: Jos van Leeuwen H. J. P. Timmermans
- Language: English
- Year: 2004
- Author: Hans Westerbeek Aaron Smith Paul Turner Paul Emery Christine Green Linda van Leeuwen
- Language: English
- Year: 2006
- Author: Jan van Leeuwen (ed.)
- Language: English
- Year: 1992
- Author: Evelyn Regar A.M.G.J. van Leeuwen Patrick W. Serruys
- Language: English
- Year: 2007
- Author: Piet W.N.M. van Leeuwen
- Language: English
- Year: 2008
- Author: Theo Van Leeuwen Carey Jewitt
- Language: English
- Year: 2008
- Author: Jan van Leeuwen (ed.)
- Language: English
- Year: 1990
