Peter G Melark 
Comets 
Characteristics, Composition and Orbits

In this book, the authors gather research from across the globe in the study of the characteristics, composition and orbits of comets. Topics discussed include the role of collisions and magneto-electrochemistry in the planetary origins of comets; 19th century cometary observations; icy particles of cometary atmosphere; cavities as a source of outbursts from comets; infrared observations of comets and the role of comets as contributors to the early evolution of Earth.