Manufacturing is making of products from raw materials using various processes , equipment, operations, and manpower according to a plan.
Prcess planning comprises the selection and sequencing of processes and operatiosn to transform a chosen raw material into the required product.
Process Planning - Design - Manufacturing Interace - Peter Scallen - 2003
The International Journal of Advanced Manufacturing Technology
May 1991, Volume 6, Issue 2, pp 205-215
Development of a product manufacturing analysis and costing system
A. J. Allen, M. S. Bielby, K. G. Swift