REFERENCES
- Adamson , H N , Hiller , R G and Vesk , M . 1980 . Chloroplast development and synthesis of Chlorophyll a and b and Chlorophyll protein complexes I and II in the dark in Tradescantia albiflora . Planta , 150 : 1184 – 1190 .
- Akobundu , I O . 1987 . “ Tropical weeds of Africa ” . 1 – 3 . Chicester, , UK : Wiley Publishers .
- American Public Health Association (APHA) . 1998 . Standard Methods for the Examination of Water and Wastewater , 20th ed , 312 Washington, DC : APHA .
- American Society for Testing and Materials (ASTM) . 1999 . “ Standard Guide for Risk-Based Corrective Action Applied at Petroleum Release Sites issued under designation ASTM E ” . 1739 – 1795 . ASTM .
- Chaineau , C H , Morel , J L and Oudot , J . 1996 . Land treatment of oil-based drill cuttings in an agricultural soil . J Environ Quality , 24 : 858
- Department of Petroleum Resources (DPR) . 2002 . Environmental Guidelines and Standards for the Petroleum Industry in Nigeria (EGASPIN) , Revised Edition , 196 – 325 . Nigeria : DPR .
- Irwin , J O . 1982 . An Obituary Appreciation . Biometrics , 39 : 527 – 528 .
- Jamers , A , Van der Ven , K , Moens , L , Robbens , J , Potters , G , Guisez , Y , Blust , R and De Coen , W . 2006 . Effect of copper exposure on gene expression profiles in Chlamydomonas reinhardtii based on microarray analysis . Aquat Toxicol , 80 : 249 – 260 .
- Johnson , A , Gunawardana , B and Singhal , N . 2009 . Amendments for Enhancing Copper Uptake by Brassica juncea and Lolium perenne from Solution . International Journal of Phytoremediation , 11 : 215 – 234 .
- Osuji , L C and Raji , S A . 2007 . Chemical Augumentation for the Remediation of a Hydrocarbon-contaminated Site. Remediation . The journal of Environmental Clean- up Costs, Technologies, and Techniques , 17 ( 3 ) : 111 – 125 .
- Parbery . 1967 . Centrosema pubescens, Fabaceae/Leguminosae www.centrosemapubescen2.htm. Accessed 5 December 2008
- Samecka-Cymerman , A and Kempers , A J . 1996 . Bioaccumulation of heavy metals by aquatic macrophytes around Wroclaw, Poland. Ecotoxicology and Environmental Safety , 35 : 242 – 247 .
- Stewarth , E A , Grimshaw , H M , John , A P and Christopher , Q . 1984 . “ Chemical analysis of ecological materials ” . In Institute of Terrestrial Ecology , 11 – 82 . Oxford, London, Edinburgh, Melbourne : Blackwell Scientific Publications .