Abstracts from M. prt25
(looks best full screen; click once; and once more on the image and then F11) (More Abstracts at : https://harrienijland.wordpress.com/abstract/ ; or in Portfolio2, above)
(looks best full screen; click once; and once more on the image and then F11) (More Abstracts at : https://harrienijland.wordpress.com/abstract/ ; or in Portfolio2, above)