7e. Congrès International de la Protection des Plantes = 7th International Congress of Plant Protection = 7. Internationaler Pflanzenschutzkongress
Subtitle: résumés des communications = summaries of papers = Zusammenfassungen der Vorträge.
Publisher: [s.n.]
Published: 1971
Place of publication: [s.i.]
Language: mul
Notes: Text in French, English and German.