It’s great that Libbrecht put a copy of his 500+ page ‘Snow Crystals’ book on arXiv [0] before an updated version was published by Princeton University Press [1].<p>[0] <a href="https://arxiv.org/abs/1910.06389" rel="nofollow">https://arxiv.org/abs/1910.06389</a>
[1] <a href="https://press.princeton.edu/books/ebook/9780691223629/snow-crystals-pdf" rel="nofollow">https://press.princeton.edu/books/ebook/9780691223629/snow-c...</a>