TY  - BOOK
AU  - Martens,J L.
ED  - Barth E M.
TI  - Argumentation: approaches to theory formation 
SN  - 9027230072
PY  - 1982///
PB  - Amsterdam/John Benjamins B.V. 
KW  - Logic
N1  - Contributions to the Groningen Conference on Theory of Argumentation, Oct. 1978. Includes bibliography
ER  -