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What role have comets played in
the formation of the Earth and
other bodies in the Solar System?
Have they been the cause of
numerous past extinction events?

Soft-covered, 130 pages, illustrated
with photographs, charts and diagrams!

£15 (p&p £2.50)
£15

     
All you ever wanted to know about meteorites, tektites and impactites! How to recognise the genuine article, how to look after your collection, the chemistry and astronomy of rocks
from space.


Soft-covered, 150 pages,
fully
illustrated with photographs,
charts and diagrams!

£25 (p&p £2.50)
£25

 

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