TY  - BOOK
AU  - Vogel, Frederic A.
TI  -  A technical note on the PPS sampling with an application to fruit an d nuts
U1  - 001.433 
PY  - 1970///
CY  - [s.l]
PB  - [s.n]
KW  - Sampling
KW  - Nuts
KW  - Fruits
N1  - Research and development Branch, standards and research division. st atistical reporting service
ER  -