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1অনুযায়ী MacPherson, Johnঅন্যান্য লেখক: “…Pearce, Douglas…”
প্রকাশিত 1990"The book is based on the discussions that took place at the International Workshop on Printed Educational Materials Development in the Third World held in February 1989"--P. 8.
কনফারেন্স প্রসিডিং গ্রন্থ