TY - JOUR AU - Goulden, I. P. AU - Jackson, D. M. TI - Maps in Locally Orientable Surfaces, the Double Coset Algebra, and Zonal Polynomials JO - Canadian journal of mathematics PY - 1996 SP - 569 EP - 584 VL - 48 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1996-029-x/ DO - 10.4153/CJM-1996-029-x ID - 10_4153_CJM_1996_029_x ER -