When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Why are they important?. Why do we study them together?. 321 15.1 Introduction 321 15.2 Early theories 321 15.3 van Oss–Good and Neumann theories 331 15.3.1 The two theories in brief 331 15.3.2 What do van Oss–Good and Neumann say about their own theories?.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.