Home / Standards / GB/T 16621-1996 GB/T 16621-1996 Active The techniques used in silviculture for seed productionstand 母树林营建技术 Standard Type GBT ICS 65.020.40 CCS B05 Status 现行 Issue Date 1996-11-27 Implementation 1997-07-01 Responsible Dept 国家林草局 Drafting Unit N/A