TY  - RPRT
TI  - Active immunization against Ascaris suum minimum lethal dose in mice.
AU  - J Guerrero
AU  - P H Silverman
PY  - 1972
DO  - 10.1007/bf00329095
UR  - https://pubmed.ncbi.nlm.nih.gov/5081043/
ID  - 5081043
ER  -