TY - BOOK TI - Standard Test Method for Impact Resistance of Flat, Rigid Plastic Specimens by Means of a Falling Dart (Tup or Falling Mass)1 UR - https://drive.google.com/file/d/1laQjUQU33ZKUXoDo6ambY076rFhYP5mf/view?usp=drivesdk ER -