Wikipedia contributors, "Hematite in Scanning Electron Microscope" type of image, Hematite (Wikipedia, The Free Encyclopedia, 9 January 2008), Hematite in SEM, magnification 100x, <http://en.wikipedia.org/w/index.php?title=Hematite&oldid=290621874>, 19 May 2009.

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    Certified instructors who self-enroll through SEC Educational have access up-to-date revisions to the basic Instructor Manual. Dated revisions will be posted periodically, correcting errors in the chapter exercises or their conventional solution as they come to the attention of the author.

    JANUARY 2018

    An enhanced electronic Instructor Manual—scheduled for release in January 2018—will provide two components for each exercise: a conventional solution (currently available in PDF format) and an Excel XLSX workbook solution.

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