Lallement, G. (1979). Semigroups and combinatorial applications. Wiley Eastern.
Dyfyniad Arddull ChicagoLallement, Gerard. Semigroups and Combinatorial Applications. New York: Wiley Eastern, 1979.
Dyfyniad MLALallement, Gerard. Semigroups and Combinatorial Applications. Wiley Eastern, 1979.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.