0818504935 Hardcover, PWS Kent Publishing Company, 1982, 576 pages. Book shows typical wear for used book, covers have creasing and small scrapes, binding is tight. Owner's name written on pastedown, paperclip has left its mark on page 460, slight soiling along outside margins from handling. Some underlining here and there in the first half, the second half of the book looks clean. The cover of the book has some scraping or rubbing of the surface material along the edge of the spine and at the top of the spine, but this will not affect readability. There appears to be a pocket on the front pastedown, perhaps for a reference table, no other material is included, the pocket is empty. A book in Civil Engineering for advanced undergraduate or graduate level course in Environmental Engineering. Water treatment and processing, also wastewater processing using a unit operation and process approach.