' ·i . i I '·' .:· Innis .. HD 45 .W657 no.61 INNOVATION RESEARCH CENTRE PORTFOLIO MANAGEMENT I NEW PRODUCT DEVELOPMENT: LESSONS FROM LEADIG FIRMS-- Par II NNIS LIBRA RY by R. G. Cooper, S. J. Edgett, E. J. Keinschidt Innovation Reseach Working Group WORG PAPER NO. 61 Febra, 1997 ��MCMASTER • U N IV E R SI T Y • MICHAEL G. neGROOTE SCHOOL OF BUSINESS ..