NP EN ISO 13937-4:2001 Textiles Tear properties of fabrics Part 4:Determination of tear force of tongue-shaped test specimens(Double tear test)(ISO 13937-4:2000)
2002NP EN ISO 13937-4:2001 Textiles Tear properties of fabrics Part 4:Determination of tear force of tongue-shaped test specimens(Double tear test)(ISO 13937-4:2000)