TY - RPRT TI - Development and application of an observational method: continuing reliability testing. AU - R A Bobbitt AU - B N Gordon AU - G D Jensen PY - 1966 DO - 10.1080/00223980.1966.10544813 UR - https://pubmed.ncbi.nlm.nih.gov/4957474/ ID - 4957474 ER -