TY  - BOOK
AU  - Challen D W
AU  -  Hagger A J
TI  - Macroeconometric systems, construciton, valliation and applications
U1  - B280aX:72, M3 
PY  - 1983///
CY  - London
PB  - The Macmillan Press       
KW  - Statistics
ER  -