no. 2
Algebras of implication and semi-lattices
Séminaire Albert Châtelet et Paul Dubreil, Tome 20 (1966-1967) no. 2, Exposé no. 20, 8 p. 
@article{SD_1966-1967__20_2_A8_0,
     author = {Abbott, James C.},
     title = {Algebras of implication and semi-lattices},
     journal = {S\'eminaire Albert Ch\^atelet et Paul Dubreil},
     note = {talk:20},
     pages = {1--8},
     year = {1966-1967},
     publisher = {Secr\'etariat math\'ematique},
     volume = {20},
     number = {2},
     mrnumber = {234872},
     zbl = {0172.02001},
     language = {en},
     url = {https://www.numdam.org/item/SD_1966-1967__20_2_A8_0/}
}
TY  - JOUR
AU  - Abbott, James C.
TI  - Algebras of implication and semi-lattices
JO  - Séminaire Albert Châtelet et Paul Dubreil
N1  - talk:20
PY  - 1966-1967
SP  - 1
EP  - 8
VL  - 20
IS  - 2
PB  - Secrétariat mathématique
UR  - https://www.numdam.org/item/SD_1966-1967__20_2_A8_0/
LA  - en
ID  - SD_1966-1967__20_2_A8_0
ER  - 
%0 Journal Article
%A Abbott, James C.
%T Algebras of implication and semi-lattices
%J Séminaire Albert Châtelet et Paul Dubreil
%Z talk:20
%D 1966-1967
%P 1-8
%V 20
%N 2
%I Secrétariat mathématique
%U https://www.numdam.org/item/SD_1966-1967__20_2_A8_0/
%G en
%F SD_1966-1967__20_2_A8_0
Abbott, James C. Algebras of implication and semi-lattices. Séminaire Albert Châtelet et Paul Dubreil, Tome 20 (1966-1967) no. 2, Exposé no. 20, 8 p.. https://www.numdam.org/item/SD_1966-1967__20_2_A8_0/