The GALE Encyclopedia of Science, 3d edition, Vol1(857s)
The GALE Encyclopedia of Science, 3d edition, Vol2(792s)
The GALE Encyclopedia of Science, 3d edition, Vol3(720s)
The GALE Encyclopedia of Science, 3d edition, Vol4(820s)
The GALE Encyclopedia of Science, 3d edition, Vol5(802s)
The GALE Encyclopedia of Science, 3d edition, Vol6(616s)