Proc. of an International Symposium "Practical aspects of controlled atmosphere and fumigation in grain storages" held from 11 to 22 April 1983 in Perth, Western Australia
(1984)
International joint conference of the American Geographival Society and the American Division of the World Academy of Art and Science, April 27 - May 2, 1970
(1971)
Proc. of a Symp. on the effects of radiation on cellular proliferation and defferentiation organized by the IAEA in co-operation with the Joint Commission on applied radioactivity and held in Monaco, 1-5 April 1968
(1968)
Proceedings of a Panel on enzymological aspects of the application of ionizing radiation to food preservation organized by the joint FAO/IAEA division of Atomic Energy in food and agriculture and held in Vienna, 8-12 April 1968
(1969)
Proceedings of a Symposium on new agricultural production and marketing aspects, organized by the United Nations Economic Commission for Europe and the Food and Agriculture Organization of the United Nations, Budapest, 25-28 April, 1977
(1977)
Monographie Horticole presentee par la Societe d'Horticulture Pratique de Nice et des Alpes-Maritimes: XV Congres International d'horticulture de Nice, April 1958
(1958)