Bibliography of Helfer, Ralph, by subject:

The number after the subject (topic or theme) tells how many books on this subject the author has. Please click on the subject to see books. Alternatively, you can see the alphabetically ordered bibliography of Helfer, Ralph.

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•	Modoc (Elephant) (3)
•	Science -- Biological Sciences -- Animals -- Wildlife (3)
•	Animals in motion pictures (3)
•	Circus animals (3)
•	Outdoors & Nature -- Fauna (2)
•	Science -- Biological Sciences -- Animals -- Mammals (2)
•	Outdoors & Nature -- Reference (2)
•	Gunterstein, Bram -- Childhood and youth -- Juvenile literature (2)
•	Motion pictures -- California -- Los Angeles (2)
•	Circus animals -- Juvenile literature (2)
•	Captive wild animals (2)
•	Modoc (Elephant) -- Juvenile literature (2)
•	Human-animal relationships -- Juvenile literature (2)
•	Biographies & Memoirs -- Arts & Literature (1)
•	Professional & Technical -- Professional Science -- Agricultural Sciences -- Animal Husbandry (1)
•	Entertainment -- Television -- Shows -- 1980's (1)
•	Arts & Photography -- Performing Arts -- Theater -- Stagecraft (1)
•	Entertainment -- Movies -- History & Criticism (1)
•	Science -- Biological Sciences -- Biology -- General (1)
•	Professional & Technical -- Professional Science -- Biological Sciences -- Biology -- General (1)

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