| 000 | 00554nam a2200193Ia 4500 | ||
|---|---|---|---|
| 008 | 230524s9999 xx 000 0 und d | ||
| 040 | _cUDSM | ||
| 050 | _aQTO GF71.H3 | ||
| 100 | _aHarrington, Robert F. | ||
| 245 | 0 | _aLearning about environment: an ecology unit for students at international and senior levels of the elementary school program | |
| 260 | _aOttawa | ||
| 260 | _bCarlton | ||
| 260 | _c1972 | ||
| 300 | _a64p. | ||
| 300 | _c28cm. | ||
| 650 | _aEnvironment | ||
| 942 | _2Library of Congress Classification | ||
| 942 | _cPamphlet | ||
| 999 |
_c121821 _d121821 |
||