JRSB101 clear and concise communication skill for business 2nd Ed.+ z5 n) G) \% o l* K9 m1 N: K
JRSB130 princples of marketing 7th Ed.4 x& E: X: x/ @. f! I
JRSB115 fundamental accounting principles volume2 12th Ed ( H9 A4 H! F$ g3 m, L9 X
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