Describes the physical characteristics, habits, and natural environment of the wild mallard duck, the ancestor of all the domestic ducks except the muscovy.
Discusses the history of marathon running, the marathon races now existing, famous runners, running records, and possible injuries that improper care may incur.
An introduction to the big rigs, their history, how they are made and tested, their special features, and their many uses. Includes a glossary of related terms.
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