lin zhong guan huai xue gai lun/: an introduction to hospice care, Lin zhong guan huai xue gai lun/: An introduction to hospice care, zui you hua dao lun/: an introduction to optimization, tian wen di zhen xue yin lun/: =an introduction to astroseismology, zhong guo min jian mei shu gai lun/: introduction to chinese folk art, dang dai ling dao ke xue gai lun=: an introduction to contemporary leadership/ yu zhou gai lun/: introduction to the universe, Dang dai ling dao ke xue gai lun=: An introduction to contemporary leadership/ ren yin gong cheng xue dao lun=: an introduction to human factors engineering/ gong gong shi ye guan li gai lun=: an introduction to public affairs management/