JIS K 6925-2:1996 Plastics -- Polybutene (PB) moulding and extrusion materials -- Part 2: Preparation of test specimens and determination of properties
1997JIS K 6925-2:1997 Plastics -- Polybutene (PB) moulding and extrusion materials -- Part 2: Preparation of test specimens and determination of properties
1996JIS K 6925-2:1996 Plastics -- Polybutene (PB) moulding and extrusion materials -- Part 2: Preparation of test specimens and determination of properties