TY  - BOOK
AU  - WRIGHT (J E)
TI  - Invariants of quadratic differential forms
U1  - 513/167 
PY  - 0000///
CY  - London
PB  - Longman Green & Co.
KW  - quadratic
KW  - of
KW  - Invariants
KW  - forms
KW  - differential
ER  -