TY - JOUR AU - Isbell, John R. TI - A Note on Exact Colimits JO - Canadian mathematical bulletin PY - 1968 SP - 569 EP - 572 VL - 11 IS - 4 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1968-068-7/ DO - 10.4153/CMB-1968-068-7 ID - 10_4153_CMB_1968_068_7 ER -