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Transportation Research Thesaurus

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Each term in the TRT is assigned a unique notational code that conveys its location within the hierarchy. The first letter of the notation represents the facet or top term. Using the notational code it is easy to determine the terms relation in the hierarchy. The term's parent (Ae) will have one less letter (from the right end) as the term (Aea). Siblings (Aeg, Aes) will have the same notational code as the term except the last letter will be different. Children (Aeac, Aeah) will have one letter appended to the end of the notational code of the term.

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Top Terms> Information organization > Activities leading to information generation > Studies > Before and after studies

Xkd: Studies
Xkdb: Before and after studies

Find documents having Before and after studies

Broader Term:
Xkd: Studies
 
Related Terms:
Xkdc: Case studies
Xkde: Cross sectional studies
Xkdf: Field studies
Xkdg: Laboratory studies
Xkdi: Impact studies
Xkdk: Panel studies
Xkdl: Pilot studies
Xkdn: State of the art studies
Xkdr: Study tours
Xkdt: Theoretical studies
Xkdw: Time studies
TRIS is a bibliographic database funded by sponsors of the Transportation Research Board (TRB), primarily the state departments of transportation and selected federal transportation agencies. TRIS Online is hosted by the National Transportation Library under a cooperative agreement between the Bureau of Transportation Statistics and TRB.
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