Home / Standards / GB/T 17504-1998 GB/T 17504-1998 Active Principle for classification of marine nature reserves 海洋自然保护区类型与级别划分原则 Standard Type GBT ICS 07.060 CCS Z06 Status 现行 Issue Date 1998-10-12 Implementation 1999-04-01 Responsible Dept 自然资源部(海洋) Drafting Unit N/A