NORMA I. CACHOLA; VICTORIANO R. RAGASA; GEORGE B. AMANO; REYNALDO Q. QUINOY. Chalk-Making using Ash Wash and Plaster of Paris. The Vector: International Journal of Emerging Science, Technology and Management (IJESTM), [S. l.], v. 2, n. 1, 1993. DOI: 10.69566/ijestm.v2i1.21. Disponível em: https://vector.unp.edu.ph/index.php/1/article/view/21. Acesso em: 25 nov. 2024.