| Answer | Crossword Clue |
|---|---|
| MALTHUS | Population-study pioneer |
| MACH | Pioneer in the study of supersonic velocities |
| PINEL | French pioneer in study of mental disease. |
| SIGMUNDFREUD | 20th cen. pioneer in study of the mind. |
| Answer | Crossword Clue |
|---|---|
| MALTHUS | Population-study pioneer |
| MACH | Pioneer in the study of supersonic velocities |
| PINEL | French pioneer in study of mental disease. |
| SIGMUNDFREUD | 20th cen. pioneer in study of the mind. |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.