Put in search term, select "All of the above" as well as"Find terms with ALL fragments". The results will map you to the correct MeSH as well as give you a list of acceptable qualifiers. In addition a scope note is provided for the heading.
LCSH/MeSH mapping data are available for downloading from the Northwestern University Library's public http site.The files are:
Lcsh200601.ZIP (containing 12,672 records, size 6.8 MB unzipped)
Mesh200601.ZIP (containing 11,478 records, size 11.6 MB unzipped)