ASTM F1962-99 Standard Guide for Use of Maxi-Horizontal Directional Drilling for Placement of Polyet
F1962-99 Standard Guide for Use of Maxi-Horizontal Directional Drilling for Placement of Polyethylene Pipe or Conduit Under Obstacles, Including River Crossings
http://www.astm.org/cgi-bin/SoftCart.exe/DATABASE.CART/PAGES/F1962.htm?L+mystore+ifma3146.