Bright, J. R., & Schoeman, M. E. (1973). Guide to practical technological forecasting. Prentice hall.
Dyfyniad Arddull ChicagoBright, James R., and Milton E.F Schoeman. Guide to Practical Technological Forecasting. New Jersey: Prentice hall, 1973.
Dyfyniad MLABright, James R., and Milton E.F Schoeman. Guide to Practical Technological Forecasting. Prentice hall, 1973.
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