This study aims to determine the implementation and the obstacles in implementing the mosque library management guidelines based on the Decree of the Director General of Islamic Community Guidance Number 543 of 2019 at the Al Markaz Al Islami Makassar mosque library. This research is descriptive with a qualitative approach. Data collection techniques were carried out by observation. i... https://www.parisnaturalfoodes.shop/product-category/methylcobalamin/