"For advanced education there are various kinds of books of knowledge, such as the four Vedas, their six supplements, the Vedānta-sūtra, books of logic, books of religiosity and the Purāṇas. So all together there are fourteen divisions of books of education. Of these, the book which presents adhyātma-vidyā, spiritual knowledge — in particular, the Vedānta-sūtra — represents Kṛṣṇa."
Purport Bhagavad-gītā As It Is 10.32
the four V e d a s, - 4
the six v e d a n g a s, 6 (six standard supplements to the vedas-Vyakaran (Sanskrit grammar) Jyotish (Astrology), Nirukti (Dictionary/etymology), Shiksha (phonetics), Chand (meter) and Kalpa Vedanga (procedural canon))
the p u r a n a s 1
the m î m a m s a (or vedanta if you are a vedantist) 1
the n y a y a sastra 1 (books on logic)
the d h a r m a sastra 1 (books on religious/moral conduct)