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Hafnium (Hf).

• Authors : McCormick, Eugene R.

Subjects: Transition metals; Hafnium; Zirconium

• Source: Salem Press Encyclopedia of Science, 2021. 3p.

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Rutherfordium (Rf).

• Authors : Minichiello, Mia

Subjects: Chemical elements; Heavy elements; Rutherfordium

• Source: Salem Press Encyclopedia of Science, 2021. 2p.

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Georg von Hevesy.

• Authors : Schiller, Nancy

Subjects: Von Hevesy, Georg

• Source: Salem Press Biographical Encyclopedia, 2023. 3p.

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Overconsumption.

• Authors : Meinhold, Roman

Subjects: Resource exploitation

• Source: Salem Press Encyclopedia, 2023. 2p.

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Zirconium (Zr).

• Authors : Benson, Alvin K.

Subjects: Zirconium

• Source: Salem Press Encyclopedia of Science, 2023. 2p.

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Henry Gwyn Jeffreys Moseley.

• Authors : Issitt, Micah

Subjects: Moseley, Henry, 1887-1915

• Source: Salem Press Biographical Encyclopedia, 2022. 3p.

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Elements of the Periodic Table: Research Starters Topic.

Subjects: Chemical element classification; Periodic table of the elements

• Source: Elements of the Periodic Table: Research Starters Topic, 2021. 1p.

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Titanium (Ti).

• Authors : Wasserman, William J.

Subjects: Titanium

• Source: Salem Press Encyclopedia of Science, 2023. 3p.

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First U.S. Commercial Nuclear Plant Opens.

• Authors : Spradley, Joseph L.

Subjects: Nuclear power plants; Duquesne Light Co.; Twentieth centuryUnited States; Shippingport (Pa.)

• Source: Salem Press Encyclopedia, 2023. 3p.

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Basaltic rocks.

• Authors : Berkley, John L.

Subjects: Basalt; Volcanic ash, tuff, etc.; Ocean bottom

• Source: Salem Press Encyclopedia of Science, 2024. 3p.

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