Data:L10a6/PD Presentation

X₆₁₇₂ X_18,7,19,8 X_4,19,1,20 X_12,6,13,5 X₈₄₉₃ X_16,13,17,14 X_14,9,15,10 X_10,15,11,16 X_20,12,5,11 X_2,18,3,17