TY  - GEN
AU  - Gunathilake,P.D
AU  - Tilakaratne , K. ; Somadasa , H. ; Oliver , K.A.D.C. ; Algama , G,S. ; Jayawardena , K.D.J.E. ; Ratnasiri , G.L. ; Ranatunge , L.P. ; Rajkumar , S. ; Udawatte , U.N.D. ; Liyanage , C. ; Sriyani , D.
TI  - Algebra calculus and co ordinate  geometry: MAF 261 mathematics
U1  - 512 
PY  - 1983///
CY  - Nugegoda
PB  - Open University
KW  - MATHEMATICS
ER  -