@misc{indiciae5f7f9cc3e31b, title = {[Personal experience in preparing precipitating agar M from Soviet raw material for use in tests for hepatitis B antigen (HBs-Ag)].}, author = {O I Tovstyko and I M Evgen'eva and T E Krupchatnikova and A N Margolina}, year = {1981}, url = {https://pubmed.ncbi.nlm.nih.gov/7220521/}, note = {Source identifier: 7220521} }