"April 28, 1993."Utilization of recycled fibers: project 3681 / John Waterhouse ... [et al.] ; The effect of recycling of fibers: project 3681 / John Waterhouse ; The identification of recycled fiber of infrared spectroscopy: project 3681 / Sujit Banerjee ; Removal of contaminations by flotation: project 3681 / Bob Stratton
