20e anniversaire de l'OEPP =
Subtitle: 20th anniversary of EPPO
By: Organisation européenne et méditerranéenne pour la protection des plates.
Publisher: OEPP
Published: 1971
Place of publication: Paris
Language: fre
Number of pages: 35
Subjects: European and Mediterranean Plant Protection Organisation.
Other titles: Vingtième anniversaire de l'OEPP; 20th anniversary of EPPO.
Notes: French and English.