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The ultimate referece for the NPD practices. A bit old now. published 1993. But still a good reference. It is cited 1300 times according to google scholar.
posted by KZM at 12:03 AM
Tuesday, April 25, 2006
The ultimate referece for the NPD practices. A bit old now. published 1993. But still a good reference. It is cited 1300 times according to google scholar.
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