- Author: Maarten Jozef Vermaseren
- Language: English
- Year: 1977
- Author: Maarten Jozef Vermaseren
- Language: English
- Year: 1977
- Author: Maarten Jozef Vermaseren
- Language: English
- Year: 1978
- Author: Maarten Jozef Vermaseren
- Language: English
- Year: 1986
- Author: Maarten Jozef Vermaseren
- Language: English
- Year: 1960
- Author: Maarten Jozef Vermaseren
- Language: English
- Year: 1982
- Author: Maarten Jozef Vermaseren
- Language: French
- Year: 1978
- Author: Maarten Jozef Vermaseren
- Language: English
- Year: 1974