here are some great book about the Genus Mammillaria :
The Cactus File Handbook 6
by John PILBEAM
ISBN Number : 0952830280
Year of publication : 1999
Pages : 376
Nb of colour photos : 425
Nb of distribution maps : 340
Language : English
Size (cm) : 18.5 x 26.0
“The Mammillaria Handbook”
by Robert T. CRAIG
ISBN Number : 090037098X
Year of publication : 1945 , reprinted in 1963, 1965, 1973 et 1989
Pages : 390
Nb of photos : 310 black and white
Language : English
“A new review of mammillaria names”
by David HUNT
ISBN Number : 0902099140
Year of publication : 1987
Pages : 128
Nb of pictures : 101 black and white
Language : English
“Taxonomische Untersuchung der Gattung Mammillaria “
by J. LÜTHY
ISBN Number : ??
Year of publication : 1995
Pages : ??
Nb of photos : ?? black and white
Language : German
“Choice Mammillaria”
Booklet by Brian Fearn and Leslie Pearcy
Year of publication : 1979 , reprinted in 1986 with modification
Pages : 88
Language : English
“TAXONOMY of the CACTACEAE”
by Joel Lodé : The new classification of Cacti also based on molecular data and explained In two volumes: Vol. I : Acanthocalycium – Lymanbensonia / Vol. II : Maihuenia – Yungasocereus – edition in english (also available in french and in spanish)
First classification of cacti based mainly (although not only) on the molecular genetics (DNA) and explained. No book on cacti has never gone this far with illustrations, both in quantity (+9500 photos) and quality, but also in diversity, with plants photographed in habitat and collection at different stages of growth, also with flowers, fruits and even seeds (more than 360 species photographed on digital microscope)! And of course, you will find all the latest discoveries!
Two volumes, A4 size, 1436 pages