1 Subjects: “...concept investigation...”

2 Subjects: “...teacher conceptions...”

3 Subjects: “...problem-solved concept...”

4

5 “..., reflecting a combination of concepts and methods that often span several areas of mechanics, mathematics...”

6 “...The concept of ‘sustainable urban development’ has been pushed to the forefront...”

7 “... and polymorphism in a population, a broader concept has emerged that examines the MHC as a multifunctional...”