TY  - BOOK
AU  - Mason, Charles
AU  - Plantinga, Andrew
ED  - National Bureau of Economic Research
TI  - Contracting for impure public goods : : Carbon offsets and additionality 
T2  - NBER Working Paper 
PY  - 2011///
CY  - Cambridge
PB  - NBER
KW  - NBERWP 16963
KW  - E4992.pdf
UR  - http://elibrary.igidr.ac.in/e-library/working papers/NBER/2011/E4992.pdf
ER  -