NababanB. 2009. CHLOROPHYLL SPECIFIC ABSORPTION COEFFICIENTS AND THE IMPACT OF PHYTOPLANKTON TAXONOMIC GROUP OF SURFACE WATERS IN THE NORTHEASTERN GULF OF MEXICO. Jurnal Ilmu dan Teknologi Kelautan Tropis. 1, 1 (Jul. 2009). DOI:https://doi.org/10.29244/jitkt.v1i1.7934.