TY  - BOOK
AU  - Gregg J V and others
TI  - Mathematical trend curves :   An aid to forecasting   
T2  - Mathematical and Statistical Techniques for Industry Monograph, 1
U1  - B280bX:89Q1, K4 
PY  - 1964///
CY  - London
PB  - Oliver and boyd Ltd       
KW  - Statistics
ER  -