Journee d'etudes organisee sous l'egide du Cercle National des Jeunes Horticulteurs par le Service Technique de la E.N.P.H.P. Paris - 25 fevrier 1971
(1971)
Proceedings of a symposium sponsored by the Soil science society of America and held at the Palmer House in Chicago, Illinois, February 14 and 15, 1968
(1968)
Proceedings of the XVII International congress "Chemistry days 1966" on chemical fertilizers sponsored by Federazione delle associazioni scientifiche e techniche and organized under the auspices of sezione Lombarda della Societa chimica ingegneria ch
(1968)
Papers presented at the conference "Comparative biochemistry and biophisics of photosynthesis", Aug. 12 to 15 in 1967 at Hakone, Japan. Sponsored by the Japan-U.S. cooperative science program
(1968)
