“THE ADDITION OF Ulva Reticulata AS A STIMULANT INTO ARTIFICIAL FEED ON THE GONAD CONDITION OF THE COLLECTOR SEA URCHIN (Tripneustes Gratilla LINNAEUS 1758)”. Jurnal Ilmu Dan Teknologi Kelautan Tropis, vol. 6, no. 1, Nov. 2014, https://doi.org/10.29244/jitkt.v6i1.8628.