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2. 2. W. Zillig, R. Palm, A. Heil, R. Losick, and M. Chamberlin (1976 ) inRNA Polymerase () pp.101 -125 , Cold Spring Harbor Laboratory.
3. The Selectivity of Transcription
4. 4. M. Chamberlin, R. Losick, and M. Chamberlin (1976 ) inRNA Polymerase () pp.159 -191 , Cold Spring Harbor Laboratory.
5. 5. R. Losick, J. Pero, R. Losick, and M. Chamberlin (1976 ) inRNA Polymerase () pp.227 -246 , Cold Spring Harbor Laboratory.