If you're seeking the "Standard Boiler Operators Questions and Answers" by Stephen Michael Elonka and Anthony Lawrence Kohan in PDF format, here are some resources to consider:
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Internet Archive: The Internet Archive offers a digital version of the book, which you can borrow and read online. Access it here:
Boilersinfo: This website provides a collection of boiler-related books, including the "Standard Boiler Operators Question Answers." You can view or download the PDF here:
Please ensure you respect copyright laws when accessing and using these materials.