1. Coal mining technology :theory and practice
Author: Stefanko, Robert
Library: Library and Documentation Center of Iranian Research Organization for Science and Technology (Tehran)
Subject: $ACoal mines and mining
Classification :
TN
800
.
S74
2. Coal mining technology: theory and practice
Author: Stefanko, Robert
Library: Central Library and Information Center of Birjand University (South Khorasan)
Subject: ، Coal mines and mining
Classification :
TN
802
.
S84
1983
3. Coal mining technology: theory and practice
Author: /by Robert Stefanko
Library: National Library and Archives of Islamic Republic of Iran (Tehran)
Subject: زغال سنگ, -- معدن و ذخایر معدنی
Classification :
TN799/9
/
الف
۷
ک
۹ ۱۳۶۲
4. Coal mining technology: Theroy and practice
Author: by Robert Stefanko; editor Christopher J. Bise
Library: Central Library and Document Center of Shahid Madani University of Azarbayjan (East Azarbaijan)
Subject: Coal mines and mining
Classification :
TN
,
802
,.
C6S8
