TY  - BOOK
AU  - Ray, William S.
TI  - An Introduction to exeprimentel design
PY  - 1960///
CY  - New York
PB  - The macmillan company
UR  - http://krc.clri.res.in:80/cgi-bin/koha/opac-detail.pl?biblionumber=1570
ER  -