Use all NHT* codes with: regional NH* codes where possible and other subject codes to give more detail and also PLACE 1* and/or TIME PERIOD 3* and 5* INTEREST Qualifiers as appropriate
Use all NHT* codes with: regional NH* codes where possible and other subject codes to give more detail and also PLACE 1* and/or TIME PERIOD 3* and 5* INTEREST Qualifiers as appropriate
