TY - WP AU - Mead,R. TI - Choice of on-farm trial sites T2 - CIMMYT Training Working Document PY - 1990///] CY - Mexico PB - CIMMYT, KW - Data analysis KW - AGROVOC KW - Sampling KW - Site Factors KW - On-farm research N1 - Open Access UR - http://hdl.handle.net/10883/867 ER -