@article{402916,
      recid = {402916},
      author = {Engels, Friedrich,},
      title = {The Part played by labour in the transition from ape to  man/},
      publisher = {Electric Book Co.,},
      address = {London :},
      pages = {20 p.},
      year = {2001},
      url = {http://library.usi.edu/record/402916},
}