Natuurbescherming in de Nederlanden.
By: [Door] H. Gysels, Illustraties: H. Gysels, G. Fissers en G. Bracke.
Series: Onze horizon
Publisher: De Sikkel
Published: 1969
Place of publication: Antwerpen
Language: dut
Number of pages: 99
Subjects: Nature conservation -- Netherlands.
Notes: Bibliography: p. 85-91.