TY - JOUR AU - Sacken, C. R. Osten PY - 1875 DA - 1900/01/01 TI - On a Supposed Case of Seasonal Dimorphism Among Diptera SP - 067956 VL - 1 AB - SN - 0033-2615 UR - https://doi.org/10.1155/1875/67956 DO - 10.1155/1875/67956 JF - Psyche PB - Hindawi Publishing Corporation KW - ER -