Diatonic Major and Minor Scales by Andrés Segovia was published in 1953 and consisted of 24 scales, 12 major and 12 minor, for which he applied his own unique fingerings.  Here in this book, those scales are re-illustrated using a combination of standard notation, tablature, and fretboard diagrams. This makes them easier to read, quicker to learn, and accessible to more people.  Also included in the material is an explanation of how Segovia organized the scales, a reference page displaying the 8 finger patterns used to play all of the scales, and practice tips for increasing speed and accuracy.