Perhaps you should try some spelling variations:
"specimina philologica slavicae" » "specimens philological slavicae", "specimina philologica slavica", "specimina philologie slave", "specimina philologica sive"
"specimina philologiae slavicae" » "specimens philological slavicae", "specimen philosophiae slavicae", "specimina philologica slavica", "specimina philologie slave"
"specimen histological slavicae" » "specimens philological slavicae", "specimen pathological slavicae", "aspects histological slavicae", "specimen histological slices", "specimen histological staging", "specimen philologica slavica"
"special histologic slavicae" » "special neurologic slavicae", "special physiological slavicae"

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