Campbell, Donald Thomas, 1916- .

[NT 60487] Overview

[NT 60478] Works:	2 [NT 60520] works in 2 [NT 60521] publications in 1 [NT 60522] languages

[NT 60480] Titles

Research design : Donald Campbell's legacy [NT 59711] by: Bickman, Leonard ([NT 1579] Language materials, printed)

Validity & social experimentation : Donald Campbell's legacy．v. 1 [NT 59711] by: Bickman, Leonard ([NT 1579] Language materials, printed)