fig 844A, drawing,
fig 844B, drawing,
fig 844C,
fig 844D,
fig 844E,
fig 844F,
fig 844G,
fig 844H, drawing,
fig 844I, drawing,
fig 844J, model,
fig 844K, model,
fig 844L, model,
fig 844M, drawing,
fig 844N, drawing,
fig 844O, drawing,
fig 844P, drawing,
fig 844Q, drawing,
fig 844R, drawing,