TY  - BOOK
AU  - Pitard,Francis F.
TI  - Pierre Gy's sampling theory and sampling practice/2nd ed
SN  - 0-8493-8917-8
U1  - 519.243 
PY  - 1993///
CY  - Boca Raton
PB  - CRC press
KW  - Ores-Sampling and estimation
ER  -