TY - JOUR AU - Peter Hilton TI - On systems of interlocking exact sequences JO - Fundamenta Mathematicae PY - 1967 SP - 111 EP - 119 VL - 61 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/fm-61-1-111-119/ DO - 10.4064/fm-61-1-111-119 LA - en ID - 10_4064_fm_61_1_111_119 ER -