TY - RPRT TI - Letter Circular 588: the National Association of Hosiery Manufactures NAHM snag resistance tester AU - Shearer, Howard E AU - Schenke, EMax PY - 1940 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - LCIRC 588 DO - 10.6028/NBS.LCIRC.588 ER -