Does Myisam put a table lock on the table even when dealing with a "select" query?

Question

I read a book High Performance MySQL, she mentions:

performing one query per table uses table locks more efficiently: the queries 
will lock the tables invididually and relatively briefly, instead of locking 
them all for a longer time.

MyISAM puts a table lock, even when selectingsomething? can someone explain a little?

Answer 1

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. http://dev.mysql.com/doc/refman/5.5/en/internal-locking.html

Answer 2

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