TY  - BOOK
AU  - Peter Howitt.
AU  - 
ED  - 
ED  - 
ED  - 
ED  - 
SN  - 70715963
SN  - 2
PY  - 1982///.;c.198246
CY  - New York
PB  - McGraw-Hill Book company
KW  - 
KW  - 2
KW  - 0
KW  - 6
KW  - 20
N1  - 5
ER  -