"harper, w m. "
statistics: / w.m. harper - 1 ed. - uk : elbs 1992. - "x, 500p.; 22 cm."
0 7121 1040 2
QA276 / .H37 1991
statistics: / w.m. harper - 1 ed. - uk : elbs 1992. - "x, 500p.; 22 cm."
0 7121 1040 2
QA276 / .H37 1991