Home / Standards / LY/T 1897-2010 LY/T 1897-2010 Abolished 华北落叶松人工林经营技术规程 Standard Type LY ICS N/A CCS N/A Status Abolished Issue Date 2010-02-09 Implementation 2010-06-01 Centralized Committee 国家林业局 Issuing Authority 国家林业局