| 000 | 00654nam a2200169Ia 4500 | ||
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| 005 | 20250508155505.0 | ||
| 008 | 008 250505s9999 xx 000 0 eng d | ||
| 037 | _aTextual | ||
| 040 |
_aFEDL _beng _cFEDL |
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| 041 |
_aeng _2eng |
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| 084 |
_a507, NAT _qFEDL |
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| 245 | 0 | _aGuidelines for development of programs in science instruction: Report of a study, making specific reference to the teaching funtion of the laboratory in secondary school science programs | |
| 260 |
_aWashington, USA _bNational Academy of Sciences-National Research Council _c1963 |
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| 300 | _aviii,68p. | ||
| 942 |
_cTEXL _h507, NAT |
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| 999 |
_c1357257 _d1357257 |
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