Judul asli : "Theory and Problem of College Algebra"
No Inv.: 516/AF/Perp/91/1c~556/AF/Perp/91/1c
No Inv.: 2774/P/Perp/96/1c~12125-12126/P/Perp/98/2c~114128/P/Perp/08/1c
No Inv.: 2671-2680/P/Perp/96/10c
No Inv.: 12500-12504/Pb/Perp/94/5c~5951-5955/P/Perp/92/5c~88147-88156/P/Perp/04/10c~114996/SM/Perp/08/1c~117271-117273/P/Perp/09/3c
Judul asli : The Socrates express : in search of life lessons from dead philosophers Bibliografi : hlm. 487-500
Judul asli : The Anthropocene reviewed : essay on a human-contered planet
Bibliografi : hlm. 153-155
Bibliografi tiap akhir bab No Inv.: 136097/SM/Perp/13/1c
Tersedia Bibliografi.