Dematera, Francis, and Linda Tamesis. “The Effect of Number of Tests, Hemoglobin Level and Working Temperature on the Specific Gravity of 100 Ml Copper Sulphate Solution in Hemoglobin Screening”. PJP 2, no. 2 (September 7, 2017): 6. Accessed April 27, 2024. https://philippinejournalofpathology.org/index.php/PJP/article/view/29.