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16. Lexicon and Relations	16. Lexicon and Relations
Lexicon and Relations (50)	Lexicon (29)
description:	USDA NAL Agricultural Thesaurus (NALT) is broadly defined and includes terminology organized into 17 subject categories such as biological, physical and social sciences. AFDSI imports physical and chemical sciences ontology.
complete name:	USDA NALT Physical and Chemical Sciences