Spectrum (Compiler)
"Spectrum" is not identifiable from the provided results as a specific human author or compiler. The search results point instead to unrelated works and programs named Spectrum, including a stellar spectral synthesis program and references to the ZX Spectrum computer, so there is insufficient evidence to write a reliable biography for an author/compiler by that name.
Spectrum Math Workbook, Grade 3
Spectrum Math Workbook, Grade 5
Spectrum Math Workbook, Grade 4
Spectrum Reading Workbook, Grade 4
Spectrum Language Arts, Grade 3
Spectrum Reading Workbook, Grade 6
Spectrum Language Arts, Grade 4
Spectrum Reading Workbook, Grade 5
Spectrum Math Workbook, Grade 6
Spectrum Language Arts, Grade 6
Spectrum Science, Grade 4
Spectrum Math Workbook, Grade 1
Spectrum Science, Grade 6
Spectrum Writing, Grade 6
Spectrum Language Arts, Grade 5
Spectrum Writing, Grade 4
Spectrum Writing, Grade 3
Spectrum Science, Grade 5
Spectrum Writing, Grade 5
Common Core Language Arts and Math, Grade 6
Spectrum Spelling, Grade 4
Spectrum Science, Grade 3
Spectrum Math Workbook, Grade K
Spectrum Reading Workbook, Grade K