(a) Two-year college requirements after July 1, 1971. The Arkansas State Board of Chiropractic Examiners construes Arkansas Code § 17-81-305(a)(2) to mean that the two (2) years of preprofessional college study in the field of science shall not be less than sixty (60) semester hour credits (or its equivalent in quarter hours) toward a degree and be successfully completed in a recognized liberal arts college or university, thirty (30) hour credits of which shall be in one (1) or more of the pure science subjects, such as:

1. (1) Biology;
2. (2) Zoology;
3. (3) Chemistry;
4. (4) Mathematics; or
5. (5) Other like subjects.