1
by Nichols, Eve K.
Published 1991
National Academy Press

2
by Andrews, Lori B.
Published 1994
National Academy Press

3
Published 1988
National Academy Press

4
by Matiaske, Wenzel
Published 2017
Nomos Verlagsgesellschaft mbH & Co. KG

5
by McAleer, Michael
Published 2019
MDPI - Multidisciplinary Digital Publishing Institute

6
by Gross, Sally-Anne
Published 2018
University of Westminster Press

7
by Ried, Walter
Published 2018
Peter Lang International Academic Publishers