<P> It is generally believed that Frederic Le Play first introduced the case - study method into social science in 1829 as a handmaiden to statistics in his studies of family budgets . </P>
<P> It is generally believed that Frederic Le Play first introduced the case - study method into social science in 1829 as a handmaiden to statistics in his studies of family budgets . </P>
who has used the case study method for first time
who has used the case study method for first time
Frederic Le Play
Frederic Le Play