TY  - BOOK
AU  - Melark,Peter G.
ED  - ProQuest (Firm)
TI  - Comets: characteristics, composition and orbits 
T2  - Space science, exploration and policies
AV  - QB721 .C6493 2012
U1  - 523.6 23
PY  - 2012///
CY  - Hauppauge, N.Y.
PB  - Nova Science Publishers
KW  - Comets
KW  - Electronic books
N1  - Includes bibliographical references and index; Electronic reproduction. Ann Arbor, MI : ProQuest, 2015. Available via World Wide Web. Access may be limited to ProQuest affiliated libraries
UR  - http://ebookcentral.proquest.com/lib/aitie/detail.action?docID=3021043
ER  -