TY - RPRT TI - Haemonchus contortus: attempts to determine biologic differences between the various morphologic types of females. AU - P B Daskalov PY - 1972 DO - 10.1016/0014-4894(72)90064-1 UR - https://pubmed.ncbi.nlm.nih.gov/4675137/ ID - 4675137 ER -