TY - JOUR T1 - AN ULTRASTRUCTURAL-STUDY OF SPERMATOGENESIS AND SPERM MORULA BREAKDOWN IN ARENICOLA-MARINA (L) (ANNELIDA, POLYCHAETA) JO - HELGOLANDER MEERESUN PY - 1992/01/01 AU - PACEY AA AU - BENTLEY MG ED - VL - 46 IS - 2 SP - 185 EP - 199 Y2 - 2025/05/21 ER -