<..bib in amsppt.sty..>+
\def\:temp#1{\edef\:tempa{\long
\def\expandafter\noexpand\csname c:#1:\endcsname
####1####2{\def\expandafter\noexpand\csname a:#1\endcsname{####1}
\def\expandafter\noexpand\csname b:#1\endcsname{####2}}}\:tempa}
\ifx \MRbox@\:UnDef\else \:temp{MR}\fi
\:temp{book}
\:temp{bookinfo}
\:temp{by}
\:temp{ed}
\:temp{finalinfo}
\:temp{issue}
\:temp{jour}
\:temp{key}
\:temp{lang}
\:temp{miscnote}
\:temp{moreref}
\:temp{pages}
\:temp{paper}
\:temp{paperinfo}
\:temp{procinfo}
\:temp{publaddr}
\:temp{publ}
\:temp{vol}
\:temp{yr}
\:temp{ref}
\:temp{keyformat}
\:temp{Refs}
-_-_-