|
|
|
Petroglyphs -- Africa , Southern
|
0
|
|
|
Petroglyphs -- Africa, Southern
|
1
|
|
|
Petroglyphs -- Arabian Peninsula
|
2
|
|
|
Petroglyphs -- Case studies
|
1
|
|
|
Petroglyphs -- Congresses
|
0
|
|
|
Petroglyphs -- Congresses
|
2
|
|
|
Petroglyphs -- Europe -- Atlantic Coast
|
0
|
|
|
Petroglyphs -- Europe -- Atlantic Coast
|
1
|
|
|
Petroglyphs -- Italy
|
2
|
|
|
Petroglyphs -- Italy -- Camonica Valley
|
1
|
|
|
Petroglyphs -- Libyan Desert
|
1
|
|
|
Petroglyphs -- Mexico -- Soconusco Region
|
0
|
|
|
Petroglyphs -- New Mexico
|
1
|
|
|
Petroglyphs -- Religious aspects
|
1
|
|
|
Petroglyphs -- Saudi Arabia
|
1
|
|
|
Petroglyphs -- Southwest , New
|
1
|
|
|
Petrography -- Ain Musa (Jordan)
|
1
|
|
|
Petrography -- Iraq Al Amir (Jordan)
|
1
|
|
|
Petrography -- Mukheiris (Jordan)
|
1
|
|
|
PETROKUM -- STORAGE -- CONGRESSES
|
1
|
|
|
PETROKUM -- UNDERGROUND STORAGE -- CONGRESSES
|
1
|
|
|
Petrol -- Arab cauntries
|
1
|
|
|
Petrol -- Arab countries \
|
1
|
|
|
Petrol -- Arab countries -- Congresses
|
0
|
|
|
Petrol - Production
|
1
|
|
|
Petroldum industry and trade -- Near East
|
0
|
|
|
petrole -- industrie et commerce
|
0
|
|
|
Petrole -- Industrie et commerce -- Aspect militaire -- Histoire -- 20e siecle
|
1
|
|
|
P�etrole -- Industrie et commerce -- Aspect militaire -- Histoire -- 20e si�ecle
|
0
|
|
|
Petrole -- Industrie et commerce -- Aspect politique -- Histoire -- 20e siecle
|
1
|
|
|
P�etrole -- Industrie et commerce -- Aspect politique -- Histoire -- 20e si�ecle
|
0
|
|
|
Petrolemum -- Indexes.
|
1
|
|
|
Petroleu
|
1
|
|
|
Petroleu industry and trade -- Congresses
|
0
|
|
|
Petroleum
|
14
|
|
|
Petroleum.
|
36
|
|
|
Petroleum
|
1
|
|
|
Petroleum ad fuel
|
0
|
|
|
Petroleum ad fuel -- Additives -- Patents
|
0
|
|
|
Petroleum additives -- Congresses
|
1
|
|
|
Petroleum -- Alaska -- North Slope.
|
1
|
|
|
petroleum -- Analysis.
|
9
|
|
|
Petroleum -- Analysis -- Congresses.
|
1
|
|
|
Petroleum -- Analysis -- Congresses
|
2
|
|
|
Petroleum and Fuel
|
1
|
|
|
Petroleum and Gas
|
1
|
|
|
Petroleum and trade
|
0
|
|
|
Petroleum -- Arab countries.
|
4
|
|
|
PETROLEUM -- ARAB COUNTRIES
|
2
|
|
|
Petroleum -- Arab countries -- Congresses
|
1
|
|
|
PETROLEUM -- ARAB COUNTRIES -- CONGRESSES
|
1
|
|
|
Petroleum -- Arab countries -- Directories
|
1
|
|
|
Petroleum -- Arab countries -- Directories.
|
1
|
|
|
PETROLEUM -- ARAB COUNTRIES -- ECONOMIC ASPECTS
|
1
|
|
|
Petroleum -- Arab world
|
1
|
|
|
Petroleum -- Arabian Gulf countries
|
1
|
|
|
Petroleum -- Arabian Gulf States.
|
0
|
|
|
Petroleum as a fuel
|
0
|
|
|
Petroleum as fuel
|
0
|
|
|
Petroleum as fuel.
|
5
|
|
|
Petroleum as fuel -- Additives -- Environmental aspects
|
0
|
|
|
Petroleum as fuel -- Additives -- Environmental aspects
|
1
|
|
|
Petroleum as fuel -- Additives -- Patents
|
1
|
|
|
Petroleum as fuel -- Additives -- Patents
|
1
|
|
|
PETROLEUM AS FUEL -- COMBUSTION -- CONGRESSES
|
1
|
|
|
Petroleum as fuel -- Congresses
|
1
|
|
|
PETROLEUM AS FUEL -- CONGRESSES,CONFERENCES,ETC.
|
0
|
|
|
Petroleum as fuel -- Environmental aspects
|
1
|
|
|
Petroleum as fuel -- Periodicals
|
1
|
|
|
Petroleum as fuel -- United States
|
1
|
|
|
PETROLEUM ASFUEL
|
0
|
|
|
Petroleum -- Bibliography.
|
1
|
|
|
PETROLEUM -- BIBLIOGRAPHY
|
1
|
|
|
Petroleum -- Bibliography -- Europe -- Bibliography.
|
0
|
|
|
Petroleum -- Biodegradation.
|
7
|
|
|
Petroleum -- Biodegradation -- Kuwait.
|
1
|
|
|
Petroleum -- Caspian Sea region.
|
0
|
|
|
Petroleum chemical
|
0
|
|
|
Petroleum chemical industry -- Great Britain -- Safety measures.
|
0
|
|
|
Petroleum chemicals
|
1
|
|
|
Petroleum chemicals.
|
14
|
|
|
Petroleum chemicals
|
1
|
|
|
Petroleum chemicals -- congresses.
|
0
|
|
|
Petroleum chemicals -- Congresses.
|
2
|
|
|
Petroleum chemicals -- Congresses
|
2
|
|
|
Petroleum chemicals -- Environmental aspects.
|
2
|
|
|
PETROLEUM -- CHEMICALS -- HANDBOOKS, MANUALS, ECT
|
0
|
|
|
Petroleum chemicals -- Handbooks, manuals, etc.
|
3
|
|
|
Petroleum chemicals -- Handbooks -- manuals -- etc
|
0
|
|
|
Petroleum chemicals -- Handbooks, manuals, etc
|
2
|
|
|
PETROLEUM CHEMICALS -- INDIA -- HANDBOOKS, MANUALS,ETC.
|
1
|
|
|
Petroleum chemicals industry.
|
7
|
|
|
Petroleum chemicals industry .
|
1
|
|
|
Petroleum chemicals industry -- Arab countries
|
1
|
|
|
Petroleum chemicals industry -- Arab countries.
|
3
|
|
|
Petroleum chemicals industry -- Automation -- Congresses
|
1
|
|
|
Petroleum chemicals industry -- Data processing
|
1
|
|
|
Petroleum chemicals industry -- Developing countries.
|
1
|
|
|
Petroleum chemicals industry -- Energy conservation -- Handbooks, manuals, et.
|
0
|
|
|
Petroleum chemicals industry -- Energy conservation -- Handbooks, manuals, etc
|
1
|
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