anchor.diff:  Margaret Singer,122
   Margherita Hack,176
   Maria Adelaide Sneider,
  -Maria Goeppert Mayer,
  +Maria Goeppert Mayer,45
   Maria Reiche,44
   Maria Spiropulu,
   Maria Teschler-Nicola,
  
positive.code: Mu Guoguang,184
  Mubarak Alhammad,1
  Mubashir Hassan,
  Muffy Calder,
  Muhammad Hafeez Qureshi,1
  Muhammad Sharif,668
  Muhammad Yar Khuhawar,
  
negative.code: Robert J. Van de Graaff,
  Robert Jacobson,1.270
  Robert Jay Lifton,
  Robert K. Crane,189
  Robert Keohane,1.040
  Robert Koch,2.120
  Robert Kraft,
  Robert L. Forward,180
  Robert L. Park,191
  Robert Langlands,
  Robert Lanza,289
  Robert Lawson Vaught,
  Robert Lazarsfeld,119
  Robert Lee Gilbertson,0
  Robert Lee Moore,38
  Robert Lefkowitz,943
  Robert Lethbridge,136
  Robert M. Grant,
  