1
Ga : gallium. Supplement vol. C1A. Compounds with noble gases, hydrogen and oxygen : system number 36 /
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Other Personal Name(s): ...Gerwarth, Ulrich W....
2
P Phosphorus [E-Book] : Mononuclear Compounds with Hydrogen /
Other Personal Name(s): ...Gerwarth, Ulrich W....

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3
Se : selenium. Supplement vol. B1. Compounds with hydrogen, oxygen, nitrogen : system number 10 /
Book
Other Personal Name(s): ...Gerwarth, Ulrich W....
4
Borverbindungen. Teil 1. Binäre Bor-Stickstoff-Verbindungen, B-B-C-Heterocyclen, polymere Bor-Stickstoff-Verbindungen.
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Other Personal Name(s): ...Gerwarth, Ulrich W....