3 ms·
I used several of their books in school. Each of them was top notch. Hell, their math books are better than the paid books I used.
by nosioptar 4mo ago
I used several of their books in school. Each of them was top notch.
Hell, their math books are better than the paid books I used.
- helterskelter 4mo agoI'm glad to hear that, I just ordered their astronomy book the other day! The online/PDF material looked good but I hate diving into something unless it's on paper.
- nosioptar 4mo agoI've seen a couple printed books from them. They all seemed to be a pretty good quality print.