| Label | Dataset | Type | Subdivision | Identifier | |
|---|---|---|---|---|---|
| 1. | Materials--Biodegradation--Study and teaching (Secondary)--Activity programs |
LC Subject Headings (LCSH) |
ComplexSubject ComplexType Authority |
sh2010001505 | |
| 2. | Instructional materials centers--Activity programs |
LC Subject Headings (LCSH) |
ComplexSubject ComplexType Authority |
sh2020010047 | |
| Activity programs in instructional materials centers | |||||
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