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by Seaman, Robert H.; Seaman, Robert H.; Hayes, Robin
by Hayes, Robert H.; Wheelwright, Steven C.
by Seaman, Robert H.; Hayes, Robin
by Pisano, Gary P.; Hayes, Robert H.
by Clark, Kim B.; Hayes, Robert H.; Lorenz, Christopher
by Robert H. Hayes (Harvard University ); Gary P. Pisano (Harvard University ); David M. Upton (Harvard University ); et al.