Henry H. Calero was an author and consultant who specialized in the field of communication and negotiation for over three decades.
[1] He is most recognized for his book The Power of Nonverbal Communication: How You Act Is More Important Than What You Say which was published in 2005.
[2] In addition to this work, Calero also collaborated with Gerard I. Nierenberg on several books, including How to Read a Person Like a Book which was first published in 1971, and The New Art of Negotiating which was released in 2008.
[3] Calero's work emphasized the significance of nonverbal communication and body language in comprehending and interpreting the thoughts and intentions of others.
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