TY - CONF T1 - THE COLLECTION EFFICIENCY OF OBSTACLES JO - 1994 ICHEME RESEARCH EVENT, VOLS 1 AND 2 PY - 1994/01/01 AU - LESNIC D AU - ELLIOTT L AU - INGHAM DB AU - ENGINEERS IC ED - SP - 1157 EP - 1159 Y2 - 2024/12/29 ER -