ebrary, Inc, Varfolomeev, S. D., Zaikov, G. E., & Krylova, L. P. (2011). Biotechnology and the ecology of big cities. Nova Science Publishers, Inc..

ebrary, Inc, Sergei D. Varfolomeev, G. E. Zaikov, and Larisa P. Krylova. Biotechnology and the Ecology of Big Cities. New York: Nova Science Publishers, Inc., 2011.

ebrary, Inc, et al. Biotechnology and the Ecology of Big Cities. Nova Science Publishers, Inc., 2011.