TY - GEN AU - Ferraguti,M AU - Bondi,M AU - Lanzavecchia,S TI - Ultrastructural analysis of sperm flagella in two clitellates (Annelida), plasma membrane and periaxonemal area SN - 0040-8166 PY - 2009///1216 N1 - Publication Type: Journal Article UR - https://doi.org/10.1016/0040-8166(91)90011-h ER -