Autor
Barrera, Víctor Hugo
Norton, George W.
3
Quishpe, David
3
Crissman, Charles
2
Wood, Stanley
2
Aguilar Cueva, María del Cisne
1
Alvarez, F.
1
Bellon, M.
1
Blundo Canto, G.
1
Carrera, Hugo
1
Debass, Thomas
1
Gotor, E.
1
Moore, Keith
1
Moyo, Sibusiso
1
Ortega, R
1
Polar, V.
1
Ramírez, M.
1
Taylor, Daniel B.
1