TY - JOUR AU - Hull, Frank M. PY - 1947 DA - 1900/01/01 TI - Some American Syrphid Flies SP - 051282 VL - 54 AB - SN - 0033-2615 UR - https://doi.org/10.1155/1947/51282 DO - 10.1155/1947/51282 JF - Psyche PB - Hindawi Publishing Corporation KW - ER -