Matches in Library of Congress for { <http://lccn.loc.gov/61019720> ?p ?o. }
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- 61019720 contributor B1487450.
- 61019720 created "[c1960]".
- 61019720 date "1960".
- 61019720 date "[c1960]".
- 61019720 dateCopyrighted "[c1960]".
- 61019720 extent "108 p.".
- 61019720 issued "1960".
- 61019720 issued "[c1960]".
- 61019720 language "eng".
- 61019720 publisher "Washington".
- 61019720 subject "Q181 .N382".
- 61019720 subject "Science Study and teaching (Secondary)".
- 61019720 title "New developments in high school science teaching.".
- 61019720 type "text".