PP 586-9
2BC 1011; 4aSG 108-9; SR 188-9
RV, Amer. Sup. PP 587
FW 33.3
PP 706
4aSG 109-10; SR 189-91
MH 436; 2BC 1011
ARV 8T 283-4
4aSG 110; SR 191
TDG 357.2