Abbott, P. frey50
Trigonometry: teach yourself P. Abbott ; revised by Hugh Neill. - Rev. / by Hugh Neill. - Lincolnwood, Ill. : NTC Pub. Group, 1998. - 170 p. : ill. ; 20 cm. - Teach yourself books . - .
0844200425
Trigonometry, Plane.
Trigonometry: teach yourself P. Abbott ; revised by Hugh Neill. - Rev. / by Hugh Neill. - Lincolnwood, Ill. : NTC Pub. Group, 1998. - 170 p. : ill. ; 20 cm. - Teach yourself books . - .
0844200425
Trigonometry, Plane.