| 000 | 004550000a22001810004500 | ||
|---|---|---|---|
| 999 |
_c65567 _d65567 |
||
| 027 |
_aSLS 428 : 1977 _q1977 |
||
| 041 | _aeng | ||
| 080 | _a658.562 | ||
| 942 | _cSD | ||
| 110 | _aBUREAU OF CEYLON STANDARDS | ||
| 245 | _aSLS 428 : 1977 : Random sampling methods | ||
| 260 |
_aColombo _bBUREAU OF CEYLON STANDARDS _c1977 |
||
| 300 | _a52p. | ||
| 500 | _aSTD2615 | ||
| 650 | _aa658.562 | ||
| 650 | _aSRI LANKA-STANDARDS | ||
| 650 | _aSTANDARDS-SRI LANKA | ||