| Save | Year | Entries | |
| Ramie | 6 | ||
| Ramie industry : Michotte, Félicien, | 1893 | 1 | |
| Rammed earth -- See Pisé | 1 | ||
| Jackson, Helen Hunt, 1830-1885. Ramona : James, George Wharton, | 1909 | 1 | |
Your entry Ramsden, Charles F. J. would be here
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| Rancho Grande (Aragua, Venezuela) -- See Parque Nacional Henri Pittier (Venezuela) | 1 | ||
| Rancho Santa Ana Botanic Garden : Rancho Santa Ana Botanic Garden of the Native Plants of California | 1957 | 1 | |
| Rancho Santa Ana Botanic Garden at Claremont -- See Rancho Santa Ana Botanic Garden | 1 | ||
| Gardeners -- Georgia -- Randolph County -- Biography : Howett, Catherine M | 1996 | 1 | |
| Kitchen gardens -- Georgia -- Randolph County -- History -- 19th century : Howett, Catherine M | 1996 | 1 | |
| Vegetable gardening -- Georgia -- Randolph County -- History -- 19th century : Howett, Catherine M | 1996 | 1 | |
| Random sampling -- See Sampling (Statistics) | 1 | ||
| Ranelagh, Lady : DiMeo, Michelle, | 2021 | 1 | |
| Ranellidae : Smith, Maxwell, | 1948 | 1 | |
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Range management -- See also Livestock --headings beginning with the word Livestock |
1 | ||
| Range management -- Australia -- Kimberley (W.A.) : Petheram, R. J. | 2003 | 1 | |
| Range plants -- Australia -- Kimberley (W.A.) -- Identification : Petheram, R. J. | 2003 | 1 | |
| Range plants -- North America | 6 | ||
| Range plants -- North America -- Identification | 6 | ||
| Range plants -- Ozark Mountains : Crawford, Hewlette S., | 1969 | 1 | |
| Range plants -- Texas -- Identification : Hatch, Stephan L., | c1993 | 1 | |
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Rangelands -- See also Livestock --headings beginning with the word Livestock |
1 | ||
| Rangelands -- Tropics | 1965 | 1 | |
| Rangelands -- United States : Marsh, C. Dwight | 1924 | 1 | |
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Ranges, Mountain -- See Mountains --headings beginning with the words Hill or Mountain |
1 | ||
| Rangifer -- See Caribou | 1 | ||
| Rangifer tarandus -- See Caribou | 1 | ||
| Ransom Nursery : Ransom Nursery | 1946 | 1 | |
| Ranunculacae -- Therapeutic use : Turnbull, Alexander, | 1838 | 1 | |
| Ranunculaceae -- 8 Related Subjects | 8 | ||
| Ranunculaceae | 6 | ||
| Ranunculaceae -- Africa, East : Milne-Redhead, E | 1952 | 1 | |
| Ranunculaceae -- Anatomy : Adlerz, E. | 1884 | 1 | |
| Ranunculaceae -- Tropics : Milne-Redhead, E | 1952 | 1 | |
| Ranunculales -- 2 Related Subjects | 2 | ||
| Ranunculales : Hao, Da Cheng, | 2018 | 1 | |
| Ranunculales -- British Columbia : Brayshaw, T. C | 1989 | 1 | |
| Ranunculales -- Therapeutic use : Hao, Da Cheng, | 2018 | 1 | |
| Rapa Nui -- See Easter Island | 1 | ||
| Rapanui -- See Easter Island | 1 | ||
| Rape oil | c1990 | 1 | |
| Rape (Plant) -- See also Rapeseed | 1 | ||
| Rape (Plant) Seed -- See Rapeseed | 1 | ||
| Rape-seed -- See Rapeseed | 1 | ||
| Rapella Orchid Co. : Rapella Orchid Co | 1954? | 1 | |
| Rapeseed : Ritthausen, Heinrich, | 1872 | 1 | |
| Rapeseed -- Composition | 2016 | 1 | |
| Rapeseed -- Health aspects | 2016 | 1 | |
| Rapeseed oil -- See Rape oil | 1 | ||
| Rapeseed products -- See also Rape oil | 1 | ||
| Raphus -- See also Dodo | 1 | ||