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Learning Perl, 6th Edition by Tom Phoenix, brian d foy, Randal L. Schwartz

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Colophon

The animal on the cover of Learning Perl, Sixth Edition, is a llama (Lama glama), a relation of the camel, and native to the Andean range. Also included in this llamoid group is the domestic alpaca and their wild ancestors, the guanaco and the vicuña. Bones found in ancient human settlements suggest that domestication of the alpaca and the llama dates back about 4,500 years. In 1531, when Spanish conquistadors overran the Inca Empire in the high Andes, they found both animals present in great numbers. These llamas are suited for high mountain life; their hemoglobin can take in more oxygen than that of other mammals.

Llamas can weigh up to 300 pounds and are mostly used as beasts of burden. A pack train may contain several hundred animals and can travel up to 20 miles per day. Llamas will carry loads up to 50 pounds, but have a tendency to be short-tempered and resort to spitting and biting to demonstrate displeasure. To other people of the Andes, llamas also provide meat, wool for clothing, hides for leather, and fat for candles. Their wool can also be braided into ropes and rugs, and their dried dung is used for fuel.

The cover image is a 19th-century engraving from the Dover Pictorial Archive. The cover font is Adobe ITC Garamond. The text font is Linotype Birka; the heading font is Adobe Myriad Condensed; and the code font is LucasFont’s TheSans Mono Condensed.

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