1938. 337 pages. No dust jacket. Orange cloth with black lettering. Water Pollution Research Technical Paper No. 7. Mild brown staining (approx. 1cm) to pages on occasion. Notable foxing and tanning to endpapers and page edges. Mild wear and bumping to spine, board edges and corners, with tanning to spine. Notable soiling, staining and marking across the boards. Small splits (approx. 1cm) to spine ends, with some along rear joint. Few deep scuffs and punctures to front board.