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Hooker-happy former New York Gov. Eliot Spitzer was using the services of the Emperors Club escort service starting in early 2006 -- when he was still state attorney general -- and doled out $100,000 on the firm's call girls, according to an upcoming Fortune magazine excerpt from Peter Elkind's "Rough Justice."

"He had been a customer of the Emperors Club for at least two full years and spent more than $100,000 on more than 20 appointments with perhaps 10 escorts in New York City, Washington, Dallas, Palm Beach and San Juan," Elkind, a Fortune editor-at-large, writes in the book.

The tome, excerpted in Fortune editions on sale Monday, claims Spitzer became an Emperors regular by mid-2007, but started using its services far earlier. He would pay extra to allow for flexibility on his schedule and rush in and out without any guards.

" 'He practically attacked me when he walked in the door,' one escort told her phone booker afterward. 'He was just ready,' " the book states.

Spitzer had several flings with an escort Elkind dubs "Angelina," who wasn't a fan of his approach. "It was very businesslike," Angelina told Elkind. "He was not one of those people who I would have said went out of their way to make me feel lovely and nice, like many did. It was very impersonal." The next time, she met [Spitzer] at the Waldorf-Astoria. "It was late at night. He rushed into the room with a baseball cap on, clearly trying not to be recognized, and wanting to get right to it," Elkind reports.

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Spitzer has recently been on a lengthy image-rehab tour, confirming in a Fortune interview with Elkind last week what The Post first reported last year -- that he's been long eyeing a political comeback.

The research in the book was done in collaboration with filmmaker Alex Gibney, who did many of the same interviews. His film has no title yet, but it's screening at the Tribeca Film Festival on April 24, and Spitzer is said to have been invited.

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