| Answer | Crossword Clue |
|---|---|
| EULER | Author of "Introduction to Algebra" |
| MCDOUGALL | "An Introduction to Social Psychology" author William |
| forewords | A short introduction to a book, typically by a person other than the author |
| foreword | A short introduction to a book, typically by a person other than the author |
| EULER | "Elements of Algebra" author |
