Hameed S, Abdullah HMA. ON DIRECT PRODUCT pure − 1 − 2 − 3 SUBGROUPS IN ABELIAN GROUP Gn×Gm. JPRM [Internet]. 14Jul.2017 [cited 4May2024];12(2):1821-7. Available from: http://scitecresearch.com/journals/index.php/jprm/article/view/1166