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	1.		Technology of environmental pollution control by Shaheen, Esber I Edition: 2nd ed. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Oklahama: Pennwell Publishing Company, 1992 Availability: Items available for loan: National Science Library (1)Call number: R 502.55 N2. Place hold Add to cart (remove)
	2.		1982 worldwide petrochemical directory / A DiVision of Pennwell Publishing Company Material type: Text; Format: print ; Literary form: Not fiction Publication details: Tulsa: A Division of Pennwell Publishing Company, 1981 Availability: Items available for reference: National Science Library: Not for loan (1)Call number: R 665.5(100)(058) M1. Add to cart (remove)
	3.		1981 worldwide petrochemical directory / A DiVision of Pennwell Publishing Company Edition: 19th ed. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Tulsa: A Division of Pennwell Publishing Company, 1980 Availability: Items available for reference: National Science Library: Not for loan (1)Call number: R 665.5(100)(058) M0. Add to cart (remove)
	4.		1984 Africa-middle East: Petroleum directory by Wilkerson, Robert M Leek, William R (Ed.) Edition: 5th ed. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Oklahoma: PennWell Publishing Company, 1983 Availability: Items available for reference: National Science Library: Not for loan (1)Call number: R 665.6(6+5-011)(058) M3. Add to cart (remove)
	5.		1984 Asia-Pacific: Petroleum directory by Wilkerson, Robert M Leek, William R (Ed.) Edition: 5th ed. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Oklahoma: PennWell Publishing Company, 1983 Availability: Items available for reference: National Science Library: Not for loan (1)Call number: R 665.6(5+265)(058) M3. Add to cart (remove)
	6.		1984 European: Petroleum directory by Wilkerson, Robert M Leek, William R (Ed.) Edition: 5th ed. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Oklahoma: PennWell Publishing Company, 1983 Availability: Items available for reference: National Science Library: Not for loan (1)Call number: R 665.6(4)(058.7) M3. Add to cart (remove)
	7.		23rd edition USA oil industry directory by Wilkerson, Robert M Leek, William R (Ed.) Material type: Text; Format: print ; Literary form: Not fiction Publication details: Oklahoma: PennWell Publishing Company, 1984 Availability: Items available for reference: National Science Library: Not for loan (1)Call number: R 665(058.7)(73) M4. Add to cart (remove)
	8.		1986 Offshore contractors and equipment worldwide directory by Leek, William R (Ed.) Edition: 18th ed. Material type: Text; Format: print ; Literary form: Not fiction Publication details: USA: PennWell Publishing Company, 1986 Availability: Items available for reference: National Science Library: Not for loan (1)Call number: R 622.002.7/.73(058) M6. Add to cart (remove)