00000cam a22000004a 4500 UP-99796217610473259 Buklod 20120912133953.0 m |q d | ta 740710s1973 dcua rb |000 0|eng d 0309021545 (iLib)UPD-00191505777 DLC DLC CU-IT NCTSLIBRARY Environmental degradation by de-icing chemicals and effective countermeasures 9 reports. Washington, D.C. Highway Research Board, National Research Council 1973. v, 86 p. ill. 25 cm. Highway research record no. 425. Includes bibliographical references. Deicing chemicals Environmental aspects. Roads Snow and ice control. Calcium chloride Environmental effects. National Research Council (U.S.). Highway Research Board. Highway research record no. 425. UPD NCTS Book