H. R Preston has written:
'Bioassay techniques'
'Effects of acid mine drainage on aquatic macroinvertebrates in the Monongahela River basin'
R. B. Preston has written: 'The postal history of Puerto Rico' -- subject(s): History, Postage stamps
R H. Charles has written: 'Eschatology'
R. H. Dunkley has written: 'Spitalfields'
H. R. Bonner has written: 'The nurse in Spokane'
R. H. Shepherd has written: 'The bibliography of Ruskin'
R. H. Lundie has written: 'Alexander Balfour'
R. H. Early has written: 'The family of Early'
R. H. Baptist has written: 'Wild deer'
R. H. Watkins has written: 'Teulu'r Hendre'
R. H. Barker has written: 'Thomas Middleton'
H. R. Holm has written: 'Forever Santa'
R. H. Bunch has written: 'The Bunch family'