Contribut. to the IV-th Sym. on Immunology of the "Gesellschaft fur Allergie und Immunitatsforschung der DDR". Organized by "Section Biowissenschaften der Karl-Marx-Univ." Leipzig, December 3 to 5, 1970
(1971)
Proc. of a Panel on the application of induced sterility for control of Lepidopterous Populations organized by the joint FAO/IAEA division of Atomic Energy in Food and Agr. and held in Vienna, 1-5 June 1970
(1971)
Proc. of the Technical Meetings on Biological nitrogen fixation of the Internat. Biological Programme (Section PP-N). Prague and Wageningen, 1970
(1971)
Materialy Miedzynarod. symp. zorganiz. przez Zespol hodowli i uprawy lucerny wydzialu v PAN oraz Inst. uprawy, hawoz. i gleboznaw. Pulawy 25-28 VIII 1970 r.
(1973)
