TY  - GEN
AU  - Ahmad,T.
TI  - Some contributions to bootstrap method of variance estimation in smaple lsurveys
KW  - Methods
KW  - Surveys
KW  - Sampling
KW  - Design
KW  - Computers
KW  - Data collection
KW  - Yields
KW  - Village
KW  - Irrigation
ER  -