The best
Across
- 3. 9th black person to recieve a phd in math
- 4. third black woman to earn a PhD in math
- 6. Jr contributor to the Manhattan Project during World War II
- 8. contributions to abstract and algorithmic graph theory
- 9. First African American woman to earn a phd in math
Down
- 1. worked for nasa
- 2. First African American woman to publish a non-PhD thesis
- 5. made critical contributions to NASA's rocket systems and energy
- 6. second black person to earn a PhD in math
- 7. building America’s first clock at the age of 24