Found for $5 each. Think I've found something... Fun fact, physics author starts explaining multiplication at pg 305.

>His most important work on the philosophy of science was his Physics: The Elements, published in 1919 (reissued by Dover as Foundations of Science: The Philosophy of Theory and Experiment in 1957). This work consists of the first two parts of a planned five-part work that was never completed. In this book Campbell developed his thesis that a critical analysis of science might not require any philosophy at all, but that an investigation of the meaning of reality and truth in science as opposed to metaphysics might be fruitful. Campbell believed that what might be considered "truth" in the realm of science might not be applicable at all in other fields