@booklet {4529,
	title = {ULBRICH, H.H.G.J., ULBRICH, M.N. and BAGNOLI, E. 1977. Contributions to the petrology of the Pocos de Caldas alkali massif, Brazil. I: petrography and structure of the Pocos de Caldas lujavrite (unpublished). 42 pp.},
	year = {1977},
	note = {ULBRICH, H.H.G.J., ULBRICH, M.N. and BAGNOLI, E. 1977. Contributions to the petrology of the Pocos de Caldas alkali massif, Brazil. I: petrography and structure of the Pocos de Caldas lujavrite (unpublished). 42 pp.}
}
