TY - JOUR T1 - Declines in the numbers of amateur and professional taxonomists: implications for conservation JO - ANIM CONSERV PY - 2002/08/01 AU - Hopkins GW AU - Freckleton RP ED - DO - DOI: 10.1017/S1367943002002299 VL - 5 SP - 245 EP - 249 Y2 - 2024/12/26 ER -