00326nam 2217979 450000100060000000300230000600500090002900800410003808200080007910000370008726000240012424500580014817979StarLibrary Marc Built20180503201711 ||||| |||||||||||amh  a540 aJohn T.maynara & Howard M.peters bu.s.a: a.c.s c1991 aUnderstand Chemical Patents (aguide For The Inventor)