| 000 | 00462nad a22001457a 4500 | ||
|---|---|---|---|
| 008 | 120525s1939 -us||||| |||| 00| 0 eng d | ||
| 041 | _aeng | ||
| 100 | 1 | _aRiddle, Oscar | |
| 245 | 1 | 4 |
_aThe opportunity and obligation of the National Association of Biology Teachers / _cOscar Riddle |
| 260 |
_a[S.l. : _bs.n.], _c1939 |
||
| 300 |
_a115-121 p. ; _c30 cm |
||
| 440 | 1 |
_aThe American biology teacher ; _v1 |
|
| 760 |
_0766 _9766 _tIstruzione. _w766 |
||
| 942 |
_2ddc _cPM |
||
| 999 |
_c25592 _d25592 |
||