821 |
Springsteen, F.J. and F.M. Leobrera 1986 Shells of the Philippines. |
Bolma girgylla |
43 |
833 |
Ruppert, E.E., R.S. Fox and R.D. Barnes 2004 Invertebrate Zoology. A functional evolutionary approach. 7th Ed. |
Bolma girgylla |
|
75835 |
Higo, S., P. Callomon and Y. Goto 1999 Catalogue and bibliography of the marine shell-bearing Mollusca of Japan. |
Bolma girgyllus |
50 |
86518 |
Poppe, G.T. 2008 Philippine marine mollusks. Vol. 1 (Gastropoda - Part 1). |
Bolma girgylla |
100, 244, pl 67 |
89179 |
Floren, A.S. 2003 The Philippine shell industry with special focus on Mactan, Cebu. |
Bolma girgyllus |
40 |