@book{3109,
	author = {Bird, J. O. and May, A. J. C.,},
	title = {Mathematics for electrical technicians levels 4 / 5 /},
	publisher = {Longman Group UK Limited,},
	year = {1994.},
	series = {Longman technician series : Mathematics and sciences},
	address = {Harlow Essex, England ;},
	edition = {2nd edn.},
	note = {Includes index.}
}