Life Sciences and Space Research. . 12., : Seattle, Washington, USA, 21 June - 2 July, 1971 ; Proceedings of the Open Meeting of Working Group 5 of the Fourteenth Plenary Meeting of Cospar
Life Sciences and Space Research. . 12., : Constance, F.R.G., 23 May - 5 June 1973 ; Proceedings of the Open Meeting of the Working Group on Space Biology of the Sixteenth Plenary Meeting of COSPAR