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1
Cohen, Warren I, 349.742-C678`l | Cambridge University Press | 1994 349.742-C678`l,
2
Cohen, Charles E., 653.23-C678a | Cambridge University Press | 1996 653.23-C678a,
3
Cohen, Charles E., 653.23-C678a | Cambridge University Press | 1996 653.23-C678a,