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Als sein Vater von einem grauenvollen Bergtroll entführt wird, steht Gregs Leben Kopf. Denn anscheinend ist er kein stinknormaler, etwas verfressener Schüler - er stammt von einem uralten Zwergenvolk ab, das in einem Höhlensystem unter Chicago lebt. Nun droht ein Krieg mit den verfeindeten Elfen. Greg muss die Zwergenausbildung absolvieren, mit seiner sprechenden Axt umgehen lernen und gleichzeitig seinen Vater wiederfinden. Zu allem Übel ist sein bester Freund Edwin ausgerechnet ein Elf. Kann er ihm überhaupt trauen?

Der zweite Band der abenteuerlichen Fantasy-Serie -...

From Chris Rylander, author of the breakout hit Fourth Stall saga, comes an incredibly funny and clever mash-up of middle grade school story and spy adventure.

There are places in the world where heroes are born. There are places where brave men and women fight a never-ending battle against evil in order to keep our country and all other countries safe. There are places where the fate of our planet is being decided, even at this very moment, the consequences of which will echo through history.

None of these places is in North Dakota.

Carson Fender, seventh grader and...

Computational Electromagnetics is a young and growing discipline, expanding as a result of the steadily increasing demand for software for the design and analysis of electrical devices. This book introduces three of the most popular numerical methods for simulating electromagnetic fields: the finite difference method, the finite element method and the method of moments. In particular it focuses on how these methods are used to obtain valid approximations to the solutions of Maxwell's equations, using, for example, "staggered grids" and "edge elements." The main goal of the book is to make...

Whether it's the sudden, plunging dives of Brown Pelicans, the singing and aerial displays of Northern Mockingbirds, or the communal nesting of Purple Martins, innate and learned behaviors are some of the most fascinating things to observe in Texas birds. Even casual birdwatchers eventually ask, "why do they do that?" while serious birders and ornithologists seek to understand all the behaviors involved in feeding, flying, mating, and rearing young. But until now, it has been hard to find this information in one handy source.

In this comprehensive, yet easy-to-use book, Kent Rylander...