TY - RPRT TI - An adaptive two-stage sequential design for sampling rare and clustered populations AU - J.A. Brown AU - M.M. Salehi AU - M. Moradi AU - G. Bell AU - D. R. Smith PY - 2008 DO - 10.1007/s10144-008-0089-1 UR - https://pubs.usgs.gov/publication/70032146 ID - 70032146 ER -