Text ( visual ) : unmediated The Pengo language : grammar, texts, and vocabulary / by T. Burrow and S. Bhattacharya. -- Oxford : Clarendon Press , 1970. -- xiii, 233 p. : map ; 23 cm. -- ISBN 0198151306 ; (BA03111420) ; https://ci.nii.ac.jp/ncid/BA03111420 Author Heading(s): Burrow, T. (Thomas) ; Bhattacharya, Sudhibhushan. -- Classification(s): LCC : PL4745 ; DC : 494/.82. -- Subject Heading(s): LCSH : Pengo language