So I got myself a book of scales (title/authors in question title) and it seems pretty extensive, with the scales presented 'plain' and in 3rds and tenths and sixths, in contrary and similar motion.
Yet I'm confused by what it doesn't have, and that is anything at all marked as Natural Minor scales. It provides Harmonic Minor scales and Melodic Minor scales (indeed, multiple arrangements of them, in contrary and similar motion, in octaves, thirds/tenths, and sixths). From searching and reading questions and answers about minor scales I get that one can quite simply modify a natural minor to figure its harmonic or melodic form and vice versa, but I also see the Natural Minor scale described as the 'default' form of the minor scale. So if the Natural Minor is the default form of a minor scale, why is there no Natural Minor scales in my otherwise comprehensive-seeming book? Am I better off replacing it with a different book of scales that includes Natural Minor scales? Do I just practice the Harmonic and Melodic Minor scales and not worry about the absence of Natural Minor scales (both in the book and therefore in my practicing)?