TY - BOOK AU - Hennessen,W. AU - Horodniceanu,F. AU - Spier,R.E. ED - International Union of Microbiology Societies TI - Developments in biological standardization: proceedings of the joint esact - IABS meeting on the use of heteroploid and other cell substrates for the production of biologicals held in Heidelberg, German, 18-22 May, 1981 PY - 1982/// CY - Basel, Switzerland PB - S. Karger AG ER -