| 000 | 00504nam a2200157Ia 4500 | ||
|---|---|---|---|
| 008 | 190328s9999||||xx |||||||||||||| ||und|| | ||
| 010 | _a64-22534 | ||
| 040 |
_aNITIL _cNITIL |
||
| 082 |
_221st _a311.23072 _bB637C |
||
| 100 | _aBlaLock, Hubert M | ||
| 245 | 0 |
_aCausal inferences in nonexperimental research _cHubert M BlaLock |
|
| 260 |
_aChapel Hill _bUniversity of North Carolina Press _c1961 |
||
| 300 | _axii, 200p. | ||
| 650 | _aMathematics-Research; Operationalism; Operations research | ||
| 942 | _cBKS | ||
| 999 |
_c9909 _d9909 |
||