Judul asli :"Spiritual journey of the mystics"
No Inv.: 126205-126209/P/Perp/10/5c
No Inv.: 127775-127779/P/Perp/10/5c
No Inv.: 130940/S/Perp/12/1c
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No Inv.: 134176/PSM/Perp/13/1c
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Bibliografi : hlm. 250-251 No Inv.: 135082 /SM/Perp/14/1c