MacBain John W.
MacLeod Kenneth H.
Magyar Tudomanyos Akademia Termeszettudomanyi Kutato Laboratoriu
Maher Ali
Mahyera Anil
Maidl Bernhard
Makovsky Lev V.
Manfred William A.
Mann Max
Manrique Jorge E.
Marchand Daniel
Massarsch Karl
Maurer Hans
McCabe Howard W.
McCabe William E.
McCabe Brothers, Inc.
McClelland Thomas Morris
McCoy James M.
McDowell, Jr. Guy
McKennon J. T.