A Symposium organized by the Council for International Organizations of Medical Sciences. Established under the joint auspices of UNESCO & WHO
((cop.1964))
Proc. of the Symp. on Res. into agro-technical methods aiming at increasing the productivity of crops --- arganized by The Agr. Section of the United Nations Economic Commission for Europe. Held at Geneve, Switzerland, 17-21 January 1983
(1983)
