Grego, Peter. <br/><br/>
Venus and Mercury, and How to Observe Them  [electronic resource] / 
by Peter Grego. 
 - New York, NY :  Springer Science+Business Media, LLC,  2008. 
 - 266 p. :  ill., digital ;  24 cm. 
 - Astronomers' Observing Guides,  1611-7360 .
<br/><br/><label>ISBN: </label>9780387742861 (electronic bk.) 9780387742854 (paper) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Popular Science.<br/>Astronomy.<br/>Planetology.<br/>Popular Science in Astronomy.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Mercury (Planet)<br/>Venus (Planet)--Observations.
<br/><br/><label>LC Class. No.: </label>QB606  / .G74 2008 
<br/><br/><label>Dewey Class. No.: </label>523.41