TY  - BOOK
AU  - J. Vernon Henderson and William Poole.
AU  - 
ED  - 
ED  - 
ED  - 
ED  - 
SN  - 669144932
SN  - 2
PY  - 1991///46
CY  - Lexington
PB  - D.C. Heath and Company
KW  - 
KW  - 2
KW  - 0
KW  - 6
KW  - 20
N1  - 5
ER  -