On Theoretical Work (Q95480531)
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Current Data About On Theoretical Work
(P31) (Q3331189)

(P50) (Q184169)

(P407) (Q1860)

(P629) (Q95480503)

(P1433) (Q95475650)
(P304) 43-67

(P1476) "On Theoretical Work:" (language: en)

(P1680) "Difficulties and Resources" (language: en)

other details
aliases Sur le travail theorique (English, 1990)