. . . . . . "Essentials for high school mathematics. Teacher's resource book"@en . . . . "Essentials for high school mathematics"@en . . "Essentials for high school mathematics" . . "Essentials for high school mathematics : solution key"@en . "Essentials for high school mathematics : solution key" . . "Essentials for high school mathematics : teacher's resource book"@en . . . . . . . . "Essentials for high school mathematics : answer key to tests"@en . . . . . . . "Essentials for high school mathematics : answer key to daily review booklet"@en . . . . . . . . "Since 1961" . . "Mathematics." . .