G       	agricultural industries
GA      	.	<people>
GA2     	.	.	dairy personnel
GA1     	.	.	farm managers
GA3     	.	.	shepherds
GC      	.	<products>
GCB     	.	.	<products by industry subsector>
GCB1    	.	.	.	cereal products
GCB2    	.	.	.	dairy products
GCB2.1  	.	.	.	.	butter
GCB2.2  	.	.	.	.	cheese
GCB2.3  	.	.	.	.	cream
GCB2.4  	.	.	.	.	ice cream
GCB2.5  	.	.	.	.	milk
GCB2.5A 	.	.	.	.	.	<milk by fat content>
GCB2.5A2	.	.	.	.	.	.	low fat milk
GCB2.5A3	.	.	.	.	.	.	skim milk
GCB2.5A1	.	.	.	.	.	.	whole milk
GCB2.5B 	.	.	.	.	.	<milk by form>
GCB2.5B1	.	.	.	.	.	.	dried milk
GCB2.5B2	.	.	.	.	.	.	liquid milk
GCB2.5C 	.	.	.	.	.	<milk by source animal>
GCB2.5C1	.	.	.	.	.	.	buffalo milk
GCB2.5C2	.	.	.	.	.	.	cow milk
GCB2.5C3	.	.	.	.	.	.	goat milk
GCB2.5C4	.	.	.	.	.	.	sheep milk
GCB2.5D 	.	.	.	.	.	<milk by treatment type>
GCB2.5D1	.	.	.	.	.	.	condensed milk
GCB2.5D2	.	.	.	.	.	.	evaporated milk
GCB2.5D3	.	.	.	.	.	.	homogenized milk
GCB2.5D4	.	.	.	.	.	.	pasteurized milk
GCB2.5D5	.	.	.	.	.	.	sterilized milk
GCA     	.	.	<products by storage properties>
GCA1    	.	.	.	long-life products
GCA1.1  	.	.	.	.	dried milk
GCA1.2  	.	.	.	.	sterilized milk
GCA2    	.	.	.	perishable products
GCA3    	.	.	.	stored products