TY - RPRT TI - Kin-number distributions over age, sex, and time AU - Butterick, J. PY - 2025 DO - 10.64898/2025.12.08.692903 UR - https://www.biorxiv.org/content/10.64898/2025.12.08.692903v1 ID - 10.64898/2025.12.08.692903 ER -