hi,

see the study material is needed to get from the center of studies of IGNOU from where you have registered for the course. however there is many website in Internet where you may get the m.a economics lectures and pdf copy for reference. however I have mentioned some of the books name which may help you in studies,

IGNOU Master In Economics IGNOU COMBO OF MEC 101, MEC 2, MEC 103, MEC 4 AND MEC 105 by CHAKRADHAR PUBLICATION (Author).