NATIONAL Laboratory Notebook, 4 X 4 Quad, Brown, Cover, 11 x 9.25", 100 Sets (43649) Brown pressboard cover Stitched binding 100, 4x4 quad carbonless numbered sets White and yellow paper 3-hole punched Stitched binding with brown pressboard cover 100 Carbonless numbered sets White and yellow paper, 3-hole punched Second sheet is microperforated 4 x 4 Quad ruled