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21
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22
Guidebook to constructing inexpensive science teaching equipment volume I ; Biology.
Foilsithe / Cruthaithe 1972LEABHAR -
23
Guidebook to constructing inexpensive science teaching equipment, volume II chemistry.
Foilsithe / Cruthaithe 1972LEABHAR -
24
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25
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26
The Universal decimal classification a programmed instruction course
Foilsithe / Cruthaithe 1970LEABHAR -
27
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28
The first U. S. mission on mental health to the U.S.S.T. ; special report.
Foilsithe / Cruthaithe 1969LEABHAR -
29
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30
Metropolitan public library users a report of survey of adult library use in the Maryland Baltimore-Washington metropolitan area
Foilsithe / Cruthaithe 1968LEABHAR