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Showing 1 - 8 results of 8 for search '"Helium."', query time: 0.03s Refine Results
  1. 1
    by Boks, Johan Diederik Anne
    Published 1924
    Leiden, Eduard Ijdo, 1924.
    25 p.
    Subjects: “...Helium....”
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  2. 2
    Leiden : N.V. Boek- En Steendrukkerij Eduard Ijdo, [1938]
    4 p. leaves, [xi]-xii, 96 p. incl. tables, diagrs. ; 24 cm.
    Subjects: “...Helium....”
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  3. 3
    by Winkel, Peter, 1926-
    Published 1954
    's-Gravenhage, Excelsior [1954]
    123 p. illus. 25 cm.
    Subjects: “...Helium....”
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  4. 4
    [Scheveningen, 1954]
    100 p. diagrs. 24 cm.
    Subjects: “...Helium Isotopes....”
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  5. 5
    Utrecht, 1940.
    [1 v.]
    Subjects: “...helium....”
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  6. 6
    Leiden [1950]
    74 p. illus. 24 cm.
    Subjects: “...Helium....”
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  7. 7
    by Dönszelmann, Arnold
    Published 1970
    Amsterdam : Mondeel-Offsetdrukkerÿ, 1970.
    96 p. : ill. ; 24 cm.
    Subjects: “...Helium Isotopes....”
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  8. 8
    by Mellink, Johan Hendrik
    Published 1948
    Leiden [1948?]
    112 p.
    Subjects: “...Helium 2. gtt....”
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