tags: chemical engineering conference, people, published in the agora, science, unidentified person

tags: d. john valley, people, portrait, published in the agora

tags: florence johnston, people, portrait, published in the agora

tags: john mccartney, people, portrait, published in the agora

tags: james macgregor, people, portrait, published in the agora

tags: people, portrait, published in the agora, roberta jamieson

tags: dr. s. singh, people, portrait, published in the agora

tags: margaret atwood, people, portrait, published in the agora

tags: fund raisers, people, published in the agora, unidentified person

tags: eric mcgoey, mike blower, mike lyons, people, published in the agora