(DOC) covers.pdf
 (DOC) math52-0.pdf
 (DOC) math52-1.pdf
 (DOC) math52-2.pdf
 (DOC) math52-3.pdf
 (DOC) math52-4.pdf
 (DOC) math52-5.pdf
 (DOC) math52-6.pdf
 (DOC) math52-7.pdf