1 “... the lesser-known stories of six inventors and their unique contributions to cycling's past which continue...”

2 “... both long-term management problems and the political, social, and economic turmoil of the past few...”

3 “..., with the advantages of fast speed, convenient operation, and easy online inspection. During the past two decades...”

4 “.... These factors take RED II directives into consideration. In the past, forestry interventions were the main...”