%0 Journal Article
%B Journal of Applied Ecology
%D 1997
%G eng
%N 3
%P 817-828
%R 10.2307/2404926
%T The Statistical Power of Two Butterfly Monitoring Schemes to Detect Trends
%U http://www.jstor.org/stable/2404926
%V 34
%8 June 1, 1997
%@ 0021-8901
%! Journal of Applied Ecology