Undertaking systematic reviews of research on effectiveness :  CRD guidelines for those carryimg out or commissioning reviews / 
NHS Centre for Reviews & Dissemination. 
 - York :  NHS Centre for Reviews & Dissemination,  1996. 
 - viii, 92p :  ill. ;  30 cm. 
 - CRD report ;  4 .
<br/><br/><label>ISBN: </label>1900640015