TY - BOOK ID - 126536749 TI - Experimental and quasi-experimental designs for research AU - Campbell, Donald Thomas AU - Stanley, Julian Cecil PY - 1963 PB - Chicago: Rand McNally, DB - UniCat KW - Experimental design UR - https://www.unicat.be/uniCat?func=search&query=sysid:126536749 AB - ER -