CLARK D, . (1983). PLANE AND GEODETIC SURVEYING FOR ENGINEERS HIGHER SURVEYING VOL2. NULL: C.B.S.
CLARK D, . 1983. PLANE AND GEODETIC SURVEYING FOR ENGINEERS HIGHER SURVEYING VOL2. NULL: C.B.S.
CLARK D, . PLANE AND GEODETIC SURVEYING FOR ENGINEERS HIGHER SURVEYING VOL2. NULL: C.B.S. 1983.