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11
Cohen, Charles E., 653.23-C678a | Cambridge University Press | 1996 653.23-C678a,
12
Cohen, Charles E., 653.23-C678a | Cambridge University Press | 1996 653.23-C678a,
13
Cohen, Joel E, 574-C678c | Spring-Verlag | 1990 574-C678c,
14
Cohen, Avner, 112.6-C678i | Open Court | 1989 112.6-C678i,