TY  - BOOK
AU  - Skala Heins J etc. Ed.
TI  - Aspects of vagueness
T2  - Theory and Decision Libreay.39
U1  - B316, M4 
PY  - 1984///
CY  - Dordrecht
PB  - D Reidel         
KW  - Analysis
N1  - Bibliography Chapterwise
ER  -