Calvin Klein Sitanggang, Tambos August Sianturi. The Effect of Freezing Time on the Melting Time of Ice Blocks at PT Siantar Ice Factory. jestm [Internet]. 2026 Mar. 27 [cited 2026 Apr. 17];6(1):281-90. Available from: https://jes-tm.org/index.php/jestm/article/view/376