Older Parents Providing Child Care for Adult Children: Does It Pay Off?

Theo G. van Tilburg, Anne‐Rigt Poortman, T. Geurts • 2012

Remarkable Plants of Texas: Uncommon Accounts of Our Common Natives

Theo G. van Tilburg, Anne‐Rigt Poortman, Matt Warnock Turner, T. Geurts • 2012

Contact Between Grandchildren and Their Grandparents in Early Adulthood

Pearl A. Dykstra, Theo Van Tilburg, Anne‐Rigt Poortman, T. Geurts • 2009

Remarkable Plants of Texas: Uncommon Accounts of Our Common Natives

Theo G. van Tilburg, Anne‐Rigt Poortman, Matt Warnock Turner, T. Geurts • 2008