TY  - BOOK
AU  - Clatworthy,Willard H.
TI  - Contributions on partially balanced incomplete block designs with two associate classes
U1  - 519.535 
PY  - 1956///
CY  - Washington
PB  - U.S. Govern Print. Of.
KW  - DISEÑO EXPERIMENTAL
KW  - ESTADISTICA MATEMATICA
ER  -