Internet Archive identifier: bub_gb_zNQoAAAAYAAJ https://archive.org/download/bub_gb_zNQoAAAAYAAJ/bub_gb_zNQoAAAAYAAJ.pdf IA digitizing sponsor: Google...
bub_gb_cNQoAAAAYAAJ https://archive.org/download/bub_gb_cNQoAAAAYAAJ/bub_gb_cNQoAAAAYAAJ.pdf IA contributor: Harvard University IA digitizing sponsor: Google...
bub_gb_Q_MqAAAAYAAJ Source Internet Archive identifier: bub_gb_Q_MqAAAAYAAJ https://archive.org/download/bub_gb_Q_MqAAAAYAAJ/bub_gb_Q_MqAAAAYAAJ.pdf IA...