"楊樹德" . "Yang shu de" . . "shu Yang shu de" . "shu" . "Shude"@en . "1900" . "杨树德" . "杨树德" . . . "Shude Yang"@en . "楊樹德" . "Yang, Shude"@nl-NL . . "Shu-te" . "杨树德" . . . "Shu-te Yang" . "Yang"@en . . .