Public health spending: World Development Indicators
Child nutrition: UNICEF
Micronutrient deficiency: Micronutrient Initiative, UNICEF
ICDS: FOCUS Survey, Citizens Initiative for the Rights of Children Under Six.
Anganwadis: Focus as above
Public Distribution System: PDS Survey 2011 Khera
(A list that will be periodically updated. Currently drawing from An Uncertain Glory: India and Its Contradictions by Jean Dreze and Amartya Sen)