Data:L10a1/PD Presentation

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