committee on the native pass laws. Union of South Africa. 1920: 2 [12 December 2009]. Kiloh, Margaret; Sibeko, Archie. A Fighting Union. Randburg: Ravan Press
labels[row][column] = min(L) for label in L linked[label] = union(linked[label], L) Second pass for row in data for column in row if data[row][column] is