Elementary Statistics With Multimedia Study Guide 10th Edition Mario F. Triola. Taken from the 10th edition but 3rd custom edition for herkimer county community college in Herkimer NY. CD has never been used and still sealed. Pages in good shape. Some light bends and scuffs on some corners.
Operation of Wastewater Treatment Plants Vol 1 8th Edition New in Package
You will find that this textbook is packed with examples that clarify tough ideas.