2018EJ/T 299-2018 Specifications for Hydrogeological Exploration of Hard Rock Uranium Deposits
1998EJ/T 299-1998 Specification for hydrogeological exploration of uranium
1987EJ 299-1987 Specifications for Hydrogeological Exploration of Uranium Deposits
EJ/T 299-1998 Specification for hydrogeological exploration of uranium has been changed from EJ 299-1987 Specifications for Hydrogeological Exploration of Uranium Deposits.