Gaya APA
Bell, S. E.. (1978).
Succesful Design for Mining Subsidence .
:
s.n..
Gaya Chicago
Bell, S. E..
Succesful Design for Mining Subsidence.
:
s.n.,
1978.
Computer Software.
Gaya MLA
Bell, S. E..
Succesful Design for Mining Subsidence.
:
s.n.,
1978.
Computer Software.
Gaya Turabian
Bell, S. E..
Succesful Design for Mining Subsidence.
:
s.n.,
1978.
Computer Software.